JP3482181B2 - Sorting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, plastic waste (light weight) such as bottles, cups, trays and bags, and boots, bags, shoes and the like that are mixed in the plastic waste. The present invention relates to an apparatus for mechanically selecting rubber (leather) and leather waste (heavy weight). In particular, the present invention relates to a sorting device that can sort lightweight and heavy items accurately and efficiently.

[0002]

2. Description of the Related Art A sorting apparatus of this type, that is, an apparatus for mechanically sorting an object to be sorted into a lighter weight less than a standard weight for sorting and a heavy weight more than a standard weight for sorting is, for example, a horizontal type (horizontal type). There is a wind type) wind sorting device. Hereinafter, this wind power sorter will be described with reference to FIG. 7 .

[0003] The wind sorting device, as shown in FIG. 7,
A horizontal flow (arrow a) is jetted to a sorting object that falls by its own weight in the space, and the time difference for the sorting object to reach a certain fall distance, that is, the terminal velocity difference of the sorting object,
Due to the difference in the horizontal movement distance of the sorting object, the lightweight object b
And heavy goods c. In FIG. 7 , the arrow d indicates the supply of the objects to be sorted, the arrow e indicates the exhaust, the arrow f indicates the recovery of the heavy object c, and the arrow g indicates the recovery of the lightweight object b.
Shown respectively.

Examples of this type of wind power sorting apparatus include those described in Japanese Patent No. 2540715 and Japanese Patent Laid-Open No. 8-47672. These wind power sorting measures are carried out by a wind force into a lightweight object b, for example, a plastic waste such as a bottle, a cup, a tray, and a bag, and a heavy object c, for example, boots mixed in the plastic waste. , Rubber such as bags and shoes,
This is to mechanically sort leather waste.

In the above-mentioned wind power sorter, it is important to sort the objects to be sorted into light weight and heavy weight accurately and efficiently.

[0006]

The wind power sorter is
This is for mechanically selecting a lightweight object and a heavy object by utilizing the difference in terminal velocity of the objects to be selected that freely fall in the space. However, the terminal velocity is determined by factors such as the specific gravity, size, and shape of the objects to be sorted (see "Waste Handbook" published by Ohmsha, Inc., edited by Japan Society of Waste Management).

For this reason, it is difficult for the conventional wind power sorter described above to accurately and efficiently sort light and heavy items. For example, even if the objects to be sorted are crushed (crushed) to have the same size before sorting, the specific gravity and shape are not the same, so it is difficult to accurately and efficiently sort light and heavy objects. Moreover, crushing power is required.

Further, in the case of rough sorting without crushing, since the free fall velocity of the sorting object is high, it is difficult to sort the lightweight object and the heavy object accurately and efficiently, and It is necessary to inject a large amount of air in order to secure the horizontal movement distance of the sorting target necessary for sorting. In particular, it is difficult to sort out relatively large and heavy plastic bottles such as detergents and shampoos.

It is an object of the present invention to provide a sorting device capable of accurately and efficiently sorting objects to be sorted into lightweight items and heavy items in the case of rough sorting without crushing.

[0010]

In order to achieve the above object, the invention according to claim 1 is rotatably mounted in a vertical direction between a supply port in a casing and a heavy weight recovery chamber. The holding plate and the holding plate are always maintained in a substantially horizontal state, and when the heavy object is placed on the holding plate, the holding plate is rotated downward to collect the heavy object. A holding plate horizontal state maintaining means for returning the holding plate to a substantially horizontal state by rotating the holding plate upward after being collected in the chamber and after the heavy plate is collected, and a light product recovery means for recovering at all times in the light product recovery chamber lightweight material that is placed on, the light was collected means, before
It is a fluid ejection means that blows away lightweight objects, and is almost horizontal.
Position that is almost the same height as the holding plate maintained in the state
The horizontal state maintaining means is arranged in the
It is placed below the plate to keep the holding plate
Fluid ejecting means for blowing up from below, and the fluid ejecting means
It is being blown up from the bottom by the jet fluid from the step.
And a stopper that keeps the holding plate substantially horizontal
It has been characterized.

As a result, in the invention according to claim 1, the object to be sorted supplied from the supply port is once received by the holding plate, and among the objects to be sorted, a lighter weight product having a weight less than the reference weight for sorting is placed on the holding plate. It is placed and recovered in the lightweight object recovery chamber by the lightweight object recovery means. On the other hand, among the objects to be sorted, a heavy object having a weight equal to or greater than the reference weight for selection is pushed down the holding plate to be collected in the heavy object collection chamber.

As described above, according to the first aspect of the present invention, the object to be sorted is temporarily received by the holding plate, and then the object to be sorted is sorted into a lightweight object and a heavy object according to the weight difference. Compared with a device that sorts by wind force, it is possible to sort the sorting target object into a lightweight object and a heavy object accurately and efficiently. In particular, in the case of rough selection without crushing, the above-mentioned effect becomes remarkable. It should be noted that when a fluid ejecting means for blowing off a lightweight object is used as the lightweight object collecting means, it is not necessary to eject a large amount of fluid.

[0013] The invention according to claim 1, selected object without clogging tangled fluid injection means,
It is possible to reliably blow off the lightweight object and collect it in the lightweight object recovery chamber. Moreover, since the lightweight object placed on the holding plate is blown away, it is not necessary to eject a large amount of fluid, so that the selection efficiency is good.

[0014] The invention according to claim 1, the fluid injection means and the stopper, since the holding plate can be reliably maintained in a substantially horizontal state, lightweight material and heavy sorting objects
It is possible to accurately and efficiently sort out a quantity . Further, since the objects to be sorted do not get entangled with the fluid ejecting means and are clogged, the durability is excellent. Further, the reference weight for selection can be easily adjusted by adjusting the ejection speed and the ejection amount of the fluid of the fluid ejecting means.

Further, in the invention according to claim 2 , fluid ejecting means for blowing out a lighter ultra-lightweight object out of the lightweight objects and not placing it on the holding plate is provided between the supply port and the holding plate. It is characterized by

As a result, according to the second aspect of the present invention, since the extremely light weight object can be blown off and selected before reaching the holding plate, the extremely light weight object is entangled with the heavy object to be selected on the heavy object side. In addition, it is possible to accurately and efficiently select a lightweight object including an extremely lightweight object and a heavy object. In addition, it becomes possible to sort the objects to be sorted into three types, that is, an extremely lightweight item, a lightweight item, and a heavy item. Further, since the objects to be sorted do not get entangled with the fluid ejecting means and become clogged, the durability is excellent.

Further , in the invention according to claim 3, an opening is provided near the fluid ejecting means for forming an associated flow that flows from the outside to the inside of the casing when the fluid is ejected from the fluid ejecting means. The fluid ejecting means of the horizontal state maintaining means is a lower-stage ejecting nozzle arranged at a position lower than the holding plate, and the fluid ejecting means of the lightweight object collecting means is at the same height as the holding plate. Ru Oh in the middle injection nozzle disposed, characterized in that, the invention according to claim 4
Further, the fluid ejecting means for blowing out a lighter ultra-lightweight object out of the lightweight objects and not placing it on the holding plate is an upper stage injection nozzle arranged at a position higher than the holding plate, And

As a result, the inventions according to claims 3 and 4 are
When the fluid is ejected from the fluid ejecting means, an associated flow that flows from the outside to the inside of the casing is formed through the opening, so that the flow rate of the fluid is increased and the efficiency is further improved. Moreover, there is no fluid velocity loss or fluid volume loss due to vortices generated near the fluid ejection means when there is no opening.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter will be described an example of preferred embodiment of a sorting apparatus in accordance with the present invention with reference to FIGS.
Note that the sorting device is not limited to this embodiment.

(Explanation of Configuration of Embodiment ) FIGS. 1 to 6 show an embodiment of a sorting apparatus according to the present invention. The sorting device in this example is made of plastic waste (light weight) such as bottles, cups, trays, bags, and boots that are mixed in the plastic waste.
Rubber (bags, shoes, etc.) and leather waste (heavy weight), that is, waste other than plastic is mechanically selected.

In the figure, reference numeral 1 is a casing of the sorting apparatus. A supply port 2 for supplying an object to be sorted is provided on the upper part of the casing 1. In addition, an opening 3 for exhaust is provided in the upper part of the casing 1. A wire mesh 4 is stretched over the exhaust opening 3.

The exhaust opening 3 exhausts the fluid injected into the casing 1 from the fluid ejecting means 10, 13, 15 described later, that is, air (see the solid arrow in FIG. 1), and the air is exhausted. Is for suppressing the outflow to the outside of the casing 1 through the light weight recovery chamber 6 and the heavy weight recovery chamber 5 described later. Further, the exhaust opening 3 has a flow velocity of air exhausted from the exhaust opening 3 of about 1 m / s or less (that is, a flow velocity at which a bag or the like does not stick to the wire net 4). As described above, the opening area is set.

Below the supply port 2 in the casing 1, a heavy object recovery chamber 5 is provided. A light weight recovery chamber 6 is provided on the side of the heavy load recovery chamber 5 in the casing 1 via a partition plate 7. The partition plate 7 is rotatably attached between the heavy object recovery chamber 5 and the light object recovery chamber 6 as indicated by the solid arrow in FIG. The rotation of the partition plate 7 is performed by a direct operation or a remote operation outside the casing 1.

Between the supply port 2 in the casing 1 and the heavy load recovery chamber 5, a holding plate 8 is arranged in the vertical direction (see FIG. 1).
Also, it is attached rotatably in the direction of the solid line arrow in FIG. That is, one end of the holding plate 8 is attached to the side wall of the casing 1 via the hinge mechanism 9 so as to be rotatable around the horizontal axis of the hinge mechanism 9.

The holding plate 8 is, for example, about 2-3 kg.
It is made of a material that will not be damaged or damaged even if the object to be sorted with a weight of is dropped and directly hits. That is, the holding plate 8 is made of a resin having excellent impact resistance, shape retention and flexibility, and in this example, a polycarbonate having a thickness of about 1 mm. Since the holding plate 8 and the hinge mechanism 9 are consumable items, regular inspection and regular replacement are required.

In the figure, 10 and 11 are a lower jet nozzle (fluid jetting means) and a stopper as means for maintaining the horizontal state of the holding plate 8. This lower injection nozzle 1
0 and a stopper 11 for maintaining the horizontal state always maintain the holding plate 8 in a substantially horizontal state, and
For example, when a heavy article 12 (see FIG. 6) such as a bag is placed on the holding plate 8, the holding plate 8 rotates downward. In addition, the reference weight of the selection in which the holding plate 8 rotates downward (the selection target is the heavy object 12 and the light object 14).
In this example, the weight (which is a reference when sorting into the ultra-lightweight material 16) is about 250 to 300 g, preferably about 300 g.

The lower jet nozzle 10 is located at a position below the holding plate 8 on the side wall of the casing 1.
It is arranged at an angle θ (about 20 ° in this example) with respect to the horizontal axis. The lower jet nozzle 10 jets air (indicated by a solid arrow) diagonally from bottom to top to blow the holding plate 8 constantly from bottom to top.

The stoppers 11 are fixed to the inner surfaces of the side walls of the casing 1 (side walls on the left and right sides of the side wall where the lower-stage injection nozzle 10 is arranged) at substantially the same height as the holding plate 8. Has been done. The left and right stoppers 11 keep the holding plate 8 blown up from below by the air jetted from the lower jet nozzle 10 substantially horizontally.

In the figure, numeral 13 is a middle-stage injection nozzle (fluid injection means) as a means for recovering lightweight materials. The light weight collecting means constituted by the middle-stage injection nozzle 13 collects the light weight 14 (see FIG. 5) mounted on the holding plate 8 such as a plastic bottle (see FIG. 5). It is always collected in the chamber 6.

The middle-stage injection nozzle 13 is disposed substantially horizontally on the side wall of the casing 1 at a position substantially the same height as the holding plate 8. This middle stage injection nozzle 1
The reference numeral 3 is for injecting air (indicated by a solid line arrow) substantially horizontally to blow the lightweight object 14 placed on the holding plate 8 into the inside of the lightweight object recovery chamber 6 at all times.

In the figure, reference numeral 15 is an upper jet nozzle (fluid jetting means) as ultra-lightweight material sorting and collecting means. The ultra-light weight sorting / collecting means composed of the upper-stage injection nozzle 15 is a lighter weight ultra-light weight material, for example, an ultra-light weight material 16 such as a plastic cup, tray or bag.
(See FIG. 5) is blown off before reaching the holding plate 8 and is not placed on the holding plate 8 and is collected in the lightweight object collecting chamber 6.

The upper injection nozzle 15 is arranged substantially horizontally on the side wall of the casing 1 between the supply port 2 and the holding plate 8. This upper jet nozzle 1
Reference numeral 5 is for ejecting air (indicated by a solid arrow) almost horizontally to blow an extremely lightweight object 16 that freely falls from the supply port 2 toward the holding plate 8 to the inside of the lightweight object recovery chamber 6. is there.

The jet nozzles 10, 13, 15 at each stage
Are respectively connected to compressed air supply means (not shown) such as a compressor via a compressed air supply path (not shown) such as a wind velocity control valve (not shown) or an air hose. The dimensions of the injection nozzles 10, 13, 15 at each stage are
As shown in FIG. 4, for example, the height A is about 20 mm and the width B is about 600 mm.

Further, the injection nozzles 10, 13,
The injection velocity (wind velocity) and the injection amount (air amount) of the air from 15 are, for example, about 25 m / s for the upper stage, about 18 m ³ / min for the upper stage, and about 30 m / min for the middle stage.
s, the middle stage air volume is about 22 m ³ / min, the lower stage air velocity is about 22 m / s, and the lower stage air volume is about 16 m ³ / min. In addition, the wind speed and the air volume of each stage are appropriately adjusted in consideration of the gravity acting on the object to be sorted.

Of the jet nozzles 10, 13, 15 of the respective stages
In the vicinity, that is, in the upper and lower casings 1, openings 17 for forming a wake are provided. Also,
A wire mesh 18 is stretched over the wake formation opening 17.

The associated flow forming opening 17 flows from the outside to the inside of the casing 1 in accordance with the injection of air from the injection nozzles 10, 13, 15 of the respective stages (in FIGS. 1 and 3). The broken line arrow) is for forming. The size of the wake formation opening 17 is as shown in FIG.
As shown in, for example, the height C is about 50 mm.

The selection in this embodiment (implementation description of the action of the form) device consists above-described configuration, hereinafter, and its function will be described.

First, as shown by the solid arrows in the figure, air is jetted from the jet nozzles 10, 13, 15 at each stage.
Next, as shown by the white arrow, the objects to be sorted are introduced into the casing 1 through the supply port 2.

Then, among the objects to be sorted that freely fall from the supply port 2, the extremely lightweight objects 16 such as plastic cups, trays, and bags are ejected from the upper jet nozzle 15 as shown by the broken line arrows in FIG. The air constantly blown in a substantially horizontal direction is blown off toward the lightweight material recovery chamber 6 side before being collected before reaching the holding plate 8.

Among the objects to be sorted, the lightweight object 14 such as a plastic bottle is once received and placed on the holding plate 8 as shown by the one-dot chain line arrow in FIG. The lightweight material 14 placed on the holding plate 8 is constantly blown and collected into the inside of the lightweight material recovery chamber 6 by the air constantly ejected from the middle-stage injection nozzle 13 in a substantially horizontal direction.

Further, among the objects to be sorted, a heavy object 12 such as a bag is once received by the holding plate 8 as shown by a solid arrow in FIG. 6, and the holding plate 8 is pushed down to collect the heavy object. Collected in chamber 5.

The holding plate 8 pushed down is quickly blown up from below by the air jetted obliquely upward from the lower jet nozzle 10 and is kept substantially horizontal by the stopper 11.

(Explanation of Effect of Embodiment ) As described above, in the sorting apparatus according to this embodiment , the lightweight object 14 ( Very lightweight 16) and heavy 1
Since the object is selected into 2, the object to be selected can be accurately and efficiently selected into the lightweight object 14 and the heavy object 12 as compared with an apparatus that selects by wind force. In particular, in the case of rough selection without crushing, the above-mentioned effect becomes remarkable.

Since the objects to be sorted can be accurately sorted into the plastic waste and the non-plastic waste, the sorting efficiency of the material sorting device for the plastic-made waste in the subsequent stage is improved. It Here, the content of a bottle or the like may exceed 300 g. In this case, there is no particular problem even if the waste containing plastic is removed from the plastic waste by the Container and Packaging Recycling Law. In rare cases, heavy plastic waste may be sorted to the non-plastic waste side. In this case as well, since the number is extremely small, it can be collected manually or it is not a problem even if it is disposed as it is.

In particular, since the sorting apparatus in this embodiment uses the middle-stage jet nozzle 13 (fluid jetting means) for blowing off the light-weight articles 14 as the light-weight article collecting means, the objects to be sorted are entangled with the middle-stage jet nozzle 13. It is possible to reliably blow off the lightweight object 14 and collect it in the lightweight object recovery chamber 6 without clogging. Moreover, since the lightweight object 14 placed on the holding plate 8 is blown off, it is not necessary to inject a large amount of air, so that the selection efficiency is good.

In the sorting apparatus according to this embodiment, the lower jet nozzle 10 that constantly blows the holding plate 8 upward and the holding jet that is blown upward by the air jetted from the lower jet nozzle 10 are held. A horizontal state maintaining means is composed of the stopper 11 for maintaining the plate 8 substantially horizontal. As a result, the holding plate 8 can be reliably maintained in a substantially horizontal state, so that the objects to be sorted are light.
Accurately and efficiently sort between the weight 14 and the weight 12.
You can That is, since the responsiveness of the holding plate 8 until returning to the horizontal state is fast, the lightweight object 14 does not slip into the heavy object recovery chamber 5 side. Further, since the object to be sorted does not get entangled with the lower jet nozzle 10 and clogged,
It has excellent durability. Further, the reference weight for selection can be easily adjusted by adjusting the wind speed and the air volume of the lower jet nozzle 10.

Further, in the sorting apparatus according to this embodiment, the upper-stage ejection nozzle 15 that does not blow the lighter extremely light weight material 16 out of the light weight materials 14 and place it on the holding plate 8.
Are provided between the supply port 2 and the holding plate 8. As a result, the ultralight object 16 can be blown and selected before reaching the holding plate 8, so that the ultralight object 16 does not get entangled with the heavy object 12 and get into the heavy object recovery chamber 5 side. Therefore, it is possible to more accurately and efficiently select the lightweight article 14 including the extremely lightweight article 16 and the heavy article 12. Further, it becomes possible to sort the objects to be sorted into three, that is, the ultra-lightweight article 16, the lightweight article 14 and the heavy article 12. Further, since the objects to be sorted do not get entangled with the upper jet nozzle 15 and become clogged, the durability is excellent. It should be noted that the upper-stage injection nozzle 15 as the means for selecting and collecting the ultra-light objects
Is not always necessary.

Further, in the sorting apparatus according to this embodiment , the accompanying flow that flows from the outside to the inside of the casing 1 with the injection of air from the injection nozzles 10, 13, 15 of each stage (in FIG. 1 and FIG. 3, (Shown by the broken line arrow) is provided with the openings 17 for forming the jet nozzles 10, 13, 1 at each stage.
5 are provided near the top and bottom. As a result, when air is jetted from the jet nozzles 10, 13, 15 of each stage, as shown by the broken line arrows in FIGS. 1 and 3, the casing 1 is opened from the outside through the accompanying flow forming opening 17. Since the associated flow that flows to is formed, the flow rate of the air is increased and the efficiency is further improved. Moreover, there is no wind speed loss or air volume loss due to vortices generated in the vicinity of the jet nozzles 10, 13, 15 at each stage when the accompanying flow forming opening 17 is not provided. The wake formation opening 17 is not always necessary.

(Description of Embodiments ) In the above embodiment , a partition plate 7 is rotatably attached between the heavy object recovery chamber 5 and the light object recovery chamber 6. Therefore, the reference weight for selection can be easily adjusted by rotationally adjusting the partition plate 7.
The partition plate 7 is not always necessary.

(Explanation of Examples Other Than the Embodiment ) In the above-mentioned embodiment, as the objects to be sorted,
Plastic waste such as bottles, cups, trays, bags, etc. on the side of the lightweight object 14 (including the ultra-light object 16) and the heavy object 12 mixed in the plastic waste.
Rubber waste such as rubber boots, bags, shoes, etc. on the side, and wastes made of leather, that is, wastes other than plastics were explained. However, according to the present invention, even if the objects other than the above-mentioned objects (plastic waste and non-plastic waste) are selected as the objects to be sorted, the objects can be sorted reliably and efficiently by weight. it can.

[0051]

As is apparent from the above, according to the sorting apparatus (Claim 1) of the present invention, after the object to be sorted is once received by the holding plate, the weight difference of the object to be sorted causes it to become a lightweight object. Since the object to be sorted is a heavy object, the object to be sorted can be accurately and efficiently sorted into a light object and a heavy object, as compared with an apparatus that selects by a wind force. In particular, in the case of rough selection without crushing, the above-mentioned effect becomes remarkable. It should be noted that when a fluid ejecting means for blowing off a lightweight object is used as the lightweight object collecting means, it is not necessary to eject a large amount of fluid.

Further, a sorting apparatus according to the present invention (claim
According to 1 ), the object to be sorted does not get tangled with the fluid ejecting means and is not clogged, and the lightweight object can be reliably blown off and recovered in the lightweight object recovery chamber. Moreover, because the lightweight object placed on the holding plate is blown off,
Since it is not necessary to eject a large amount of fluid, the selection efficiency is good.

A sorting device according to the present invention (claim
According to 1 ), since the holding plate can be reliably maintained in a substantially horizontal state by the fluid ejecting means and the stopper ,
Accurately and efficiently select objects to be sorted into lightweight and heavy items
It can be different . Further, since the objects to be sorted do not get entangled with the fluid ejecting means and are clogged, the durability is excellent. Further, the reference weight for selection can be easily adjusted by adjusting the ejection speed and the ejection amount of the fluid of the fluid ejecting means.

Further, a sorting device according to the present invention (claim
According to 2 ), it is possible to blow and sort the ultra-lightweight object before reaching the holding plate, so that the ultra-lightweight object is not entangled with the heavy-weight object and sorted to the heavy-weight object side. It is possible to accurately and efficiently select a lightweight article including a lightweight article and a heavy article. In addition, it becomes possible to sort the objects to be sorted into three types, that is, an extremely lightweight item, a lightweight item, and a heavy item. Further, since the objects to be sorted do not get entangled with the fluid ejecting means and become clogged, the durability is excellent.

Further, a sorting device according to the present invention (claim
According to the third and fourth aspects , when the fluid is ejected from the fluid ejecting means, an associated flow that flows from the outer side to the inner side of the casing through the opening is formed, so that the flow rate of the fluid is increased and the efficiency is further improved. . Moreover, there is no fluid velocity loss or fluid volume loss due to vortices generated near the fluid ejection means when there is no opening.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a first embodiment of a sorting apparatus of the present invention.

FIG. 2 is likewise a partially cutaway perspective view.

FIG. 3 is likewise a partial vertical cross-sectional view showing the injection nozzles at each stage.

FIG. 4 is a perspective view showing the injection nozzles of each stage.

FIG. 5 is a partial vertical cross-sectional view showing a state in which an extremely lightweight material and a lightweight material are similarly collected and collected.

FIG. 6 is a partial vertical cross-sectional view showing a state in which heavy objects are selectively collected.

FIG. 7 is a partial vertical cross-sectional view showing a conventional wind power sorting device.

[Explanation of symbols]

1 Casing 2 Supply Port 3 Exhaust Opening 4 Wire Mesh 5 Heavy Weight Recovery Chamber 6 Light Weight Recovery Chamber 7 Partition Plate 8 Holding Plate 9 Hinge Mechanism 10 Lower Injection Nozzle (Fluid Injecting Means, Maintaining Horizontal Level of Holding Plate) 11 Stopper (Holding plate horizontal state maintaining means) 12 Heavy objects 13 Middle-stage injection nozzles (fluid ejecting means, lightweight object collecting means) 14 Lightweight objects 15 Upper-stage injection nozzles (fluid ejecting means, extremely lightweight object sorting and recovering means) 16 Very lightweight objects 17 Opening 18 for forming a wake

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norihiko Ono 12 Nishikicho, Naka-ku, Yokohama City, Mitsubishi Heavy Industries Ltd. Yokohama Works (72) Inventor Takeshi Shiraishi 12 Nishikimachi, Naka-ku, Yokohama City Mitsubishi Heavy Industries Ltd., Yokohama Works ( 56) References JP-A-11-244787 (JP, A) JP-A-2000-117193 (JP, A) Fukui Sho 61-118682 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB) (Name) B07B 1/00-15/00

Claims (4)

(57) [Claims] 1. A device for mechanically sorting a sorting object into a light weight product having a weight less than a standard weight for sorting and a heavy product having a weight more than a standard weight for sorting, wherein a supply port of the sorting target object is provided at an upper portion. A casing, a heavy object recovery chamber provided below the supply port in the casing, a lightweight object recovery chamber provided at a side of the heavy object recovery chamber in the casing, and A holding plate rotatably mounted in the vertical direction between the supply port and the heavy object collection chamber, the holding plate is always maintained in a substantially horizontal state, and the heavy object is placed on the holding plate. When the holding plate is placed on the holding plate, the holding plate is rotated downward to collect the heavy object in the heavy object collection chamber, and after the heavy object is collected, the holding plate is rotated upward. A horizontal state maintaining means for returning the holding plate to a substantially horizontal state; Light weight recovery means for constantly recovering the light weight material placed on the holding plate that maintains a substantially horizontal state in the light weight material recovery chamber , wherein the light weight material recovery means is the light weight material. A fluid jet that blows away
Is a shooting means that is maintained in a substantially horizontal state.
It is arranged at a position substantially the same height as the holding plate, and the horizontal state maintaining means is positioned below the holding plate.
It is arranged in the above and always blows up the holding plate from the bottom to the top.
And a fluid ejected from the fluid ejection means.
The holding plate that is blown up from the bottom to the top
A sorting device comprising a stopper that keeps horizontal . 2. A fluid ejecting means is provided at a position above the holding plate so as not to blow out a lighter and very light weight object out of the lightweight objects and place it on the holding plate. The sorting apparatus according to claim 1, wherein: 3. The casing in the vicinity of the fluid ejection means
The grayed, openings for associated air flowing from the outside to the inside of the casing with the injection of fluid from said fluid injection means is formed, is provided, the fluid injection means of the horizontal state maintaining means is a lower injection nozzle disposed in a position below the said retaining plate, the fluid injection means of the lightweight material recovery means is in the middle injection nozzle disposed in a position of substantially the same height as the retaining plate sorting device according to claim 1, characterized in that. 4. The casing in the vicinity of the fluid jetting means.
The grayed, openings for associated air flowing from the outside to the inside of the casing with the injection of fluid from said fluid injection means is formed, is provided, the fluid injection means of the horizontal state maintaining means Is a lower-stage injection nozzle arranged at a position lower than the holding plate, and the fluid injection means of the lightweight object recovery means is a middle-stage injection nozzle arranged at a position substantially the same height as the holding plate. The fluid ejecting means that blows out a lighter ultra-lightweight object out of the lightweight objects and does not place it on the holding plate is an upper jet nozzle arranged at a position higher than the holding plate, The sorting device according to claim 2 .