JP2003260414A - Sorter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sorter capable of efficiently sorting mixed refuse comprising soil, sand, stones, plastic bags, PET bottles, empty cans, wood or the like. <P>SOLUTION: This sorter 1 is equipped with a roller conveyor 2 obliquely arranged so that the front side in the feed direction thereof is turned upwardly. The roller conveyor 2 is equipped with a large number of rollers 5 arranged at a constant interval in the feed direction and the respective rollers 5 are constituted of the rotary plates 52 coaxially attached to a rotary shaft 51 at a constant interval. The contour shapes of the rotary plates 52 are set so that the depth of troughs between the rotary plates 52 adjacently arranged in the feed direction fluctuates accompanied by rotation. Further, the trough parts formed to the outer peripheries of the rotary plates 52 are regulated by the inclined surfaces going outwardly in a radial direction accompanied by rotation. Since a phenomenon such that empty cans, PET bottles or the like are stagnated between the rotary plates 52 or fed together with sheets or the like can be prevented, sorting operation can be efficiently performed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for selecting dust mixed with soil, sand, stones, plastic bags, PET bottles, empty cans, lumber, etc., such as dust during river cleaning and industrial waste. It concerns sorting machines.

[0002]

2. Description of the Related Art Dust and industrial waste generated during river cleaning are generally soil, sand, stone, plastic bags, plastic bottles,
It is a mixed dust in which empty cans and lumber are mixed. In order to regenerate the mixed dust, it is necessary to sort it into fine particles such as soil, sand and stones, solid materials such as PET bottles and empty cans, and sheets such as vinyl bags.

Various types of sorters have been proposed for sorting such mixed dust. As one of them, there has been proposed one using a roller conveyor having a configuration in which a plurality of rollers having a configuration in which a plurality of rotating plates are coaxially arranged on a rotating shaft are arranged in parallel.

In the sorting machine of this construction, the roller conveyor is arranged so as to be inclined so that the front side in the feeding direction faces upward, and the mixed dust is thrown onto it. When the mixed dust is put on the roller conveyor, the soil contained in it,
Fine particles such as sand and stones fall downward from the gaps between the rotary plates of the roller conveyor. In addition, solid objects such as PET bottles and empty cans slide down along the upper surface of the inclined roller conveyor in the direction opposite to the feeding direction, and the remaining sheets such as vinyl bags are the rotary plates of the roller conveyor. Sent out by. In this way, the mixed dust is 3
Sorted into different types of dust.

[0005]

However, in the conventional sorting machine, when empty cans and the like contained in the mixed dust to be thrown into the valley between the adjacent rotating plates, the empty cans rotate in this part. It may stay.
If there is such mixed dust left on the roller conveyor, there is a problem that the sorting efficiency is lowered and the working efficiency is poor because it needs to be removed manually.

An object of the present invention is to propose a sorting machine which efficiently sorts mixed dust in which soil, sand, stones, plastic bags, PET bottles, empty cans, lumber, etc. are mixed.

[0007]

In order to solve the above-mentioned problems, the present invention provides a roller conveyor comprising rollers having a plurality of rotating plates coaxially attached to a rotating shaft at predetermined intervals, Incliningly arranged so that the front side in the feeding direction is up, throwing in mixed dust from the top of this roller conveyor,
The first dust contained in the mixed dust is dropped from the gap of the rotating plate, the second dust contained in the mixed dust is slid along each roller, and the remaining third dust is removed by each rotating body. In a sorter that sorts mixed dust by transporting, when viewed from the rotation axis direction of the rollers, the valley between the rotation plates defined by the rotation plates of the rollers that are adjacently arranged along the feed direction. The depth of the, so as to periodically fluctuate with the rotation of these rollers, each rotary plate is a contour shape in which peaks and valleys are alternately formed in the circumferential direction, the valleys, It is characterized in that it is an inclined surface that is directed outward in the radial direction as the rotary plate rotates.

In the sorting machine of the present invention, the depth of the valley formed between the rotating plates of the adjacent rollers periodically fluctuates as the rollers rotate. Therefore, an empty can or the like sandwiched between the rollers can be pushed out from between them and slipped off.

Further, the valley portion formed on the outer circumference of each rotary plate is defined by an inclined surface which is directed outward in the radial direction with the rotation. Therefore, empty cans, PET bottles, etc. on the inclined surface that defines the valley of the rotating plate,
It is pushed outward in the radial direction as it rotates. Therefore,
With the rotation of the rotary plate, empty cans and the like are ejected and can be efficiently slid and collected in a predetermined storage section without remaining on the roller conveyor.

Here, the rotary plate may have a contour shape in which four peak portions are formed at intervals of 90 degrees.

Next, the rotational phase of the roller arranged on the front side in the feeding direction is set so that the opening angle of the valley formed between the rollers arranged adjacently along the feeding direction becomes 90 degrees or more. It is desirable to rotate each roller synchronously while advancing by a certain angle.

With this configuration, it is possible to avoid the problem that a plastic bottle or the like is caught between the rotary plates that are adjacent to each other in the feeding direction. Further, it is possible to avoid the adverse effect that the PET bottle or the like is transported without slipping off.

Further, it is desirable to fix the gaps between the rotary plates by fixing disks on both sides of each rotary plate that are large enough to fit on the side surfaces of the rotary plates. By doing so, it is possible to avoid the problem that sheets, empty cans, and the like are clogged in the gaps between the rotary plates.

On the other hand, at the front end portion of the roller conveyor in the feeding direction, there is arranged a rotating body in which discs are coaxially attached at regular intervals with respect to the rotating shaft, and the discs are circumferentially arranged on the outer periphery of each disc. It is desirable to adopt a configuration in which a plurality of claw portions are attached along the. The discs with the claws can efficiently convey the sheets.

Further, in this case, a baffle plate having a lower end face facing each disc at a constant interval is arranged immediately above the rotating body, and the baffle plate can be moved up and down by an elastic member. It is desirable to support the condition. It is possible to separate the rod-shaped material or the like conveyed with the sheets from the sheets with a baffle plate and collect them at a predetermined place. Further, since the baffle plate can be moved up and down, it is possible to avoid the problem that sheets and the like are clogged between the baffle plate and the rotating body.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sorting machine to which the present invention is applied will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a sorting machine of this example, and FIG. 2 is an explanatory view showing a sorting operation of mixed dust by the sorting machine shown in FIG.

As shown in these figures, the sorting machine 1 of this example
Has a roller conveyor 2, a pedestal 3 that supports the roller conveyor 2 in an inclined state so that the side in the feeding direction is up, and a device frame 4 that surrounds the outside of the roller conveyor 2.

The roller conveyor 2 is provided with a plurality of rollers 5 arranged in parallel along the feeding direction at regular intervals, and a frame body 6 that supports the rollers 5 in a rotatable state. Each roller 5 has a rotating shaft 51 spanned in the width direction orthogonal to the feed direction with respect to the frame body 6, and a plurality of rotating plates 52 coaxially fixed to the rotating shaft 51 at regular intervals. I have it. Rotating plate 5 of adjacent rollers 5
2 are arranged alternately.

Lower end portion 6a of frame 6 of roller conveyor 2
The (rear end portion in the feeding direction) is supported on the gantry 3 side via a hinge 61 in a state of being rotatable in the up-down direction, and the upper end portion 6b side of the frame body 6 can be lifted and lowered by a cylinder 62. It is supported on the gantry 3 side in this state. Cylinder 6
By expanding and contracting 2, the inclination angle of the roller conveyor 2 can be adjusted.

A charging port 41 formed in the apparatus frame 4 is located right above the center of the roller conveyor 2. From this input port 41, mixed dust M in which dust generated during river cleaning, soil such as industrial waste, sand, stones, plastic bags, PET bottles, empty cans, lumber, and the like are mixed is supplied to an external belt conveyor. It can be added by 7.

A recovery hopper 42 having a size including the lower surface of the roller conveyor 2 is arranged below the roller conveyor 2, and a fine particle is predetermined just below the lower end opening of the recovery hopper 42. A conveyor 42a for transporting to the collection place is arranged. At the front end of the roller conveyor 2 in the feeding direction, a recovery hopper 43 for guiding dust falling from the roller conveyor 2 is arranged. Sheets are provided directly below the lower end opening of the recovery hopper 43. A conveyor 43a for transporting to the collecting place is arranged. Further, at the rear end portion of the roller conveyor 2 in the feeding direction, a recovery hopper 44 for guiding dust slid off from the roller conveyor 2 is also arranged. Solid matter is provided just below the lower end opening of the recovery hopper 44. A conveyor 44a is arranged for transporting to a predetermined collection place.

Prior to explaining the details of the roller conveyor 2 which is a feature of the sorting machine 1 of this embodiment, an outline of the sorting operation will be described with reference to FIG. When the mixed dust M is put on the inclined roller conveyor 2, the fine particles M1 such as soil, sand, and stones contained in the mixed dust M are generated by the rotary plate 52 and the rotary shaft 51. It falls down from the gap formed between them, is guided to the conveyor 42a via the recovery hopper 42, and is conveyed to a predetermined recovery place. Sheets M2 such as a vinyl bag contained in the mixed dust M thrown in are
It is transported to its front end by the roller conveyor 2,
Conveyor 4 is dropped from there and is passed through recovery hopper 43.
It is guided to 3a and conveyed to a predetermined collection place. Mixed dust M
Of the remaining empty cans, plastic bottles and other solids M3
Is slid down along the upper surface of the roller conveyor 2, dropped from the rear end portion thereof, guided to the conveyor 44a through the recovery hopper 44, and conveyed to a predetermined recovery place. In this way, the mixed dust M is divided into three types of dust M by the sorter 1.
1 to M3 are selected.

(Roller Conveyor) FIGS. 3 (a), 3 (b) and 3 (c) show the roller conveyer 2 of the sorting machine 1 shown in FIG.
FIG. 3 is a partial plan view showing the above, a side view of the structure when viewed from the feeding direction, and an explanatory view showing an arrangement state of rotating plates of each roller. As shown in these drawings, the roller conveyor 2 has a configuration in which a plurality of rollers 5 are arranged along the feeding direction A at regular intervals. Each roller 5 is composed of a rotating shaft 51 having a rectangular cross section and a plurality of rotating plates 52 coaxially fixed to the rotating shaft 51 at regular intervals.
Both end portions of are rotatably supported by the frame body 6 via bearings 61. One end of each rotary shaft 51 penetrates through the bearing 61 and projects laterally, and a motor is provided via a transmission mechanism including a sprocket 50a attached to this projecting portion and a chain 50b bridged over these. By 50c, each roller 5 synchronously rotates in the same direction T.

The rotary plate 52 is formed with four convex portions projecting outward at 90-degree intervals on the outer peripheral surface thereof, so that a peak portion 521 and a valley portion 522 are alternately appearing. In addition, the valley portion 522 has an inclined surface 522 that gradually extends outward in the radial direction as the rotary plate 52 rotates.
Specified by a.

For example, as shown in FIG. 4, substantially arc-shaped convex portions 101 to 104 having a curvature larger than this are formed on the outer circumference of a circle 100 indicated by an imaginary line at intervals of 90 degrees, and one adjacent convex portion is formed. A tangent line 110 of a circle 100 passing through the hem 102a of the convex part 102 located on the front side in the rotational direction from the convex part 101, for example, and smoothly connecting this tangent line 110 to the convex part 101 forms the valley part 522. A slant line is provided to define the prescribed inclined surface 522a.

Next, each roller 5 has its rotating plate 52.
Are arranged at intervals smaller than the minimum diameter of the rotating rollers 52, and the rotating plates 52 are alternately inserted between the adjacent rollers 5. In this example, discs 53 having a size that can be accommodated in the side faces of the rotary plates are attached to both side faces of each rotary plate 52. When the roller conveyor 2 is viewed from above, a gap 54 is formed between the adjacent rollers 5 between the outer peripheral edge of the rotary plate 52 and the disc 53 and the rotary shaft 51 of the adjacent roller 5. Is turned on (see FIG. 3).

(Rotation Phase Difference Between Rollers) Here, in this example, when viewed from the direction of the roller rotation axis 5A, the opening angle of the valley formed between the adjacent rollers 5 becomes 90 degrees or more. As described above, a rotation phase is provided between the adjacent rollers 5 for synchronous rotation.

FIG. 5A is an explanatory view showing the rotational phase difference between two adjacent rollers 5. As shown in this figure, the rotating plate 52B of the roller 5B located on the front side in the feeding direction A has the roller 5B located on the rear side in the feeding direction A.
Compared to the rotating plate 52A of A, it is set so as to rotate synchronously in a state in which the rotation phase advances by α degrees. By adding this phase difference α, the front rotary plate 52B and the rear rotary plate 52A
The opening angle θ of the valley 120 formed between the two can be set to 90 degrees or more.

In the sorting machine 1 of the present embodiment thus constructed, as described with reference to FIG. 2, the mixed dust M is sorted into the first to third dusts M1 to M3. Here, in this example, each roller 5
In the contour shape of the rotary plate 52, the depth of the valley 120 formed between the rotary plates 52 adjacent to each other in the conveyor feeding direction periodically fluctuates with the rotation. Therefore, it is possible to avoid the adverse effect that empty cans, PET bottles, and the like stay between them, as in the case where the rollers are formed by using discs or the like.

Further, the valley portion 522 formed on the outer circumference of each rotary plate 52 is defined by the inclined surface 522a which is directed outward in the radial direction as the rotary plate 52 rotates. Therefore, the rotary plate 52
With the rotation of, the empty cans, PET bottles, etc. on this are pushed outward by the inclined surface that defines the valley. Therefore, empty cans, plastic bottles, and the like sandwiched between the rotating plates are pushed upward as the rotating plates rotate, efficiently sliding down on the roller conveyor, and falling downward.

Further, a rotational phase is provided between the rotary plates adjacent to each other in the conveyor feeding direction so that the opening angle of the valley 120 formed between these rotary plates becomes 90 degrees or more. As a result, it is possible to avoid the harmful effects that a plastic bottle or the like between them is caught and stays there, and the harmful effect that it is conveyed by a roller conveyor.

That is, as shown in FIG. 5 (a), the mixed dust MA sandwiched between the valleys 120 between the rotary plates is pushed by the rear rotary plate 52A and the inclined surface 52 of the front rotary plate 52B.
A force acts diagonally upward so as to separate from 2a. For this reason,
With the rotation of the rear rotary plate 52A and the front rotary plate 52B, the mixed dust MA is pushed up and can be slid down along the upper surface of the roller conveyor 2.

On the other hand, as shown in FIG.
When the front rotary plate 52B and the mountain portion 521 of the rear rotary plate 52A in the rotation direction T of the roller 5 are at the same position, that is, in the same phase, they are formed between the front rotary plate 52B and the rear rotary plate 52A. The opening angle θ of the valley 120 is 90 degrees. At this time, the mixed dust MA sandwiched between the valleys 120 has an inclined surface 522a from the rear rotary plate 52A to the front rotary plate 52B.
A force acts parallel to the roller conveyor. Therefore, the mixed dust MA, which is originally desired to be moved to the downstream side of the roller conveyor, is pushed forward by the rotation of the rear rotary plate 52A and the front rotary plate 52B to move to the roller conveyor. It is not preferable because it moves upstream.

Further, as shown in FIG. 5 (c), the roller 5
Front rotating plate 52B in the rotation direction T of
In contrast, when the position of the peak portion 521 is delayed by α degrees, that is, when the rotation phase is delayed, the valley 120 formed by the inclined surfaces 522a is formed between the front rotary plate 52B and the rear rotary plate 52A. Angle θ is less than 90 degrees. At this time, a force acts on the mixed dust MA sandwiched between the valleys so as to press it from the rear rotary plate 52A against the inclined surface 522a of the front rotary plate 52B. The mixed dust MA to be moved to the side is undesirably pushed forward due to the rotation of the rear rotary plate 52A and the front rotary plate 52B with considerable probability and moved upstream of the roller conveyor.

(Other Embodiments) In addition to the above configuration, in order to efficiently drop only the sheets from the dust sent by the roller conveyor, it is arranged at the front end of the roller conveyor 2 in the feeding direction. The roller 22 may be configured by a disc having a claw formed on the outer circumference for hooking and feeding sheets.

As shown in FIG. 6, in the sorting machine 1A, the roller 22 arranged at the front end of the roller conveyor 2 is provided with a plurality of discs 56, and each disc 56 has a constant outer periphery. The claws 57 are formed at angular intervals. A baffle plate 8 attached to the device frame 4 via a spring 81 is attached directly above the roller 22. The lower end of the baffle plate 8 faces the roller 22 with a slight clearance, and a notch 82 for passing the claw 57 of the disc 56 is also formed. The other configuration is the same as that of the sorting machine 1 described above, and thus the description thereof is omitted.

In the sorting machine 1A thus constructed, the sheet-like material conveyed by the roller conveyor 2 can be caught by the claws 57 of the circular plate 56 with claws and reliably dropped. Moreover, since the thin baffles other than the sheets that are sent to the upstream side due to their light weight are prevented from being conveyed by the baffle plate 8, they are not mixed with the sheets and are not sorted. Further, since the baffle plate 8 is supported by the spring 81, the gap is widened when a thick sheet or the like passes, so that the sheet or the like will not be clogged in this portion.

[0039]

As described above, in the sorting machine of the present invention, when viewed from the direction of the rotation axis of the rollers, the rotary plate defined by the rotary plates of the rollers that are arranged adjacent to each other along the feed direction. The depth of the intervening valleys has a contour shape in which peaks and valleys are alternately formed in the circumferential direction of each rotary plate so that they periodically vary with the rotation of these rollers, It is characterized in that the valley portion is an inclined surface that extends outward in the radial direction as the rotary plate rotates.

According to this structure, the depth of the valley formed between the rotating plates of the adjacent rollers periodically fluctuates as the rollers rotate. Therefore, an empty can or the like sandwiched between the rollers can be pushed out from between them and efficiently slid down along the roller conveyor. Further, the valley portion formed on the outer circumference of each rotary plate is defined by an inclined surface which is outward in the radial direction as the rotary plate rotates. Therefore, empty cans, PET bottles, and the like that are on the inclined surface that defines the valleys of the rotating plate are pushed outward in the radial direction as the container rotates. Therefore, the empty cans and the like are ejected as the rotary plate rotates, so that the empty cans and the like can be efficiently slid down and collected in a predetermined storage section without remaining on the roller conveyor.

Further, in the sorting machine of the present invention, it is arranged on the front side in the feeding direction so that the opening angle of the valley formed between the rollers arranged adjacently along the feeding direction is 90 degrees or more. Each roller is synchronously rotated with the rotation phase of the roller advanced by a certain angle. With this configuration, it is possible to avoid the problem that a plastic bottle or the like is caught between the rotary plates that are adjacent to each other in the feeding direction. Further, it is possible to avoid the adverse effect that the PET bottle or the like is transported without slipping off.

Further, in the sorting machine of the present invention, the disks between the rotary plates are fixed by fixing the disks having the sizes that can be accommodated on the side surfaces of the rotary plates on both sides of each rotary plate. As a result, it is possible to avoid the problem that sheets, empty cans, and the like are clogged in the gaps between the rotary plates.

Next, in the sorting machine of the present invention, at the front end portion of the roller conveyor in the feeding direction, a rotating body having a structure in which discs are coaxially attached at regular intervals with respect to the rotating shaft is arranged, and each circle is arranged. A structure in which a plurality of claw portions are attached to the outer periphery of the plate along the circumferential direction is adopted. The discs with the claws can efficiently convey the sheets.

Further, in this case, a baffle plate having lower end faces facing each disc at a constant interval is arranged immediately above the rotating body, and the baffle plate can be moved vertically by an elastic member. By adopting the configuration supported by, it is possible to separate the rod-shaped material or the like conveyed with the sheets from the sheets by the baffle plate and collect them at a predetermined place. Also,
Since the baffle can be moved up and down, it is possible to avoid the problem that sheets and the like are clogged between the baffle and the rotating body.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a sorting machine to which the present invention is applied.

FIG. 2 is an explanatory diagram showing a mixed dust sorting state by the sorting machine shown in FIG.

3 (a), (b) and (c) are a plan view, a side view and an arrangement state of rotating plates on rollers, in which a part of the roller conveyor of the sorter shown in FIG. 1 is omitted. FIG.

FIG. 4 is an explanatory diagram showing a contour shape of a rotary plate of rollers in the roller conveyor of the sorting machine of FIG.

5 (a), (b) and (c) are explanatory views showing a rotational phase difference of a rotary plate attached to adjacent rollers of the roller conveyor of FIG. 3 and its action.

FIG. 6 is a schematic configuration diagram showing an example of another sorter to which the present invention is applied.

[Explanation of symbols]

1 sorter 2 roller conveyor 3 mounts 4 equipment frame 5 roller 6 frame 41 slot 42, 43, 44 Recovery hopper 51 rotation axis 52 rotating plate 53 discs 54 Gap 521 mountain part 522 valley part 522a inclined surface M mixed dust M1 first dust M2 second dust M3 third dust

Claims (6)

[Claims] 1. A roller conveyor composed of rollers having a plurality of rotary plates coaxially attached to a rotary shaft at predetermined intervals, and the roller conveyor is inclined so that the front side in the feeding direction is upward. The mixed dust is introduced from above the conveyor, the first dust contained in the mixed dust is dropped from the gap of the rotary plate, and the second dust contained in the mixed dust is passed along each roller.
In a sorter for sorting mixed dust by sliding off the dust of the above and transporting the remaining third dust by each roller, when it is seen from the rotation axis direction of the rollers, it is arranged adjacently along the feed direction. In order that the depth of the valleys between the rotating plates defined by the rotating plates of each roller varies periodically with the rotation of these rollers, each rotating plate is oriented in the circumferential direction so that the peaks and valleys are formed. A sorting machine having a contour shape in which portions are alternately formed, and the valley portion is an inclined surface directed outward in the radial direction as the rotary plate rotates. 2. The sorting machine according to claim 1, wherein the rotary plate is formed with four mountain portions at intervals of 90 degrees. 3. The roller arranged on the front side in the feeding direction according to claim 1, wherein an opening angle of the valley formed between the rollers arranged adjacent to each other along the feeding direction is 90 degrees or more. The sorting machine is characterized in that each roller rotates synchronously when the rotation phase of the is advanced by a certain angle. 4. The selection according to any one of claims 1 to 3, characterized in that, on both sides of each rotary plate, a disk having a size that can be accommodated in a side surface of the rotary plate is fixed. Machine. 5. The front roller according to any one of claims 1 to 4, wherein the front end roller in the feeding direction has a disk coaxially mounted at a constant interval with respect to a rotation shaft. A sorting machine that is arranged and has a plurality of claw portions attached to the outer circumference of each disk along the circumferential direction. 6. The baffle plate according to claim 5, wherein a baffle plate having a lower end surface facing each disc at a constant interval is arranged immediately above the front end roller, and the baffle plate is formed by an elastic member. A sorter characterized by being supported in a vertically movable state.