JP6371999B1 - Mixed collection waste sorting system - Google Patents

Abstract

An object of the present invention is to provide a mixed collection waste sorting processing system capable of reducing the installation space and improving workability at the time of manual sorting of empty bottles and collection containers containing contents.
During transport of mixed collection waste A by a first belt conveyor 11, a lightweight empty container to a second belt conveyor 12 juxtaposed to the first belt conveyor 11 by wind force from a wind sorter 13. Blow away. Since the two short first and second belt conveyors 11 and 12 are arranged side by side, the installation space of the sorting processing system 10 can be reduced. In addition, since the objects to be sorted are reduced by blowing off the lightweight empty containers, the workability of manual sorting between the empty bottles and the collection containers containing the contents performed on the downstream side of the first belt conveyor is enhanced. The number of hand sorting personnel can be reduced.
[Selection] Figure 1

Description

  The present invention relates to a mixed collection waste sorting processing system, more specifically, a mixed collection waste including a plurality of types of collection containers conveyed by a belt conveyor, a can, a bottle, a PET bottle not containing contents, and a The present invention relates to a sorting and processing system for mixed collection waste that separates the waste from the other.

Empty cans of beverage containers (empty aluminum cans / empty steel cans), empty bottles, empty plastic bottles, etc. are collected not only by municipalities such as municipalities, but also through business routes from convenience stores and vending machines. The These are sorted by type, and after being reprocessed, they are reused for various purposes.
By the way, each collected container is not necessarily separated, and these may be collected in a plastic bag as a mixed collection waste in which a plurality of types of beverage containers and other garbage are mixed. Is almost.
For this reason, each local government resource sorting center has a single belt conveyor (first conveyor) that is long in the horizontal direction, breaks the plastic bags upstream of this conveyor, and is lined up along the conveyor path. Are sorted into steel cans, aluminum cans, and PET bottles that do not contain the contents (residues) by each dedicated sorter. The bottles and the respective beverage containers containing the contents were manually sorted (for example, Non-Patent Document 1).

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However, conventionally, the operation of separating beverage containers packed in broken plastic bags for each type has been sequentially performed along a conveying path of one belt conveyor that is extended in the horizontal direction. Therefore, the resource sorting center has to secure a large space in order to install this long belt conveyor.
In addition, since it depends only on the manual work of the worker to sort out PET bottles containing residues from the containers sent in a mixed state on the belt conveyor, from a mixed container sent in large quantities More workers had to be placed in the work area where the empty bottle and the beverage container containing the residue were manually sorted. As a result, the work burden for sorting has increased.

  As a result of intensive research, the inventor paid attention to the behavior of this empty container in a wind power sorter that blows off lightweight empty containers such as empty cans and empty plastic bottles from the conveying path of the belt conveyor by wind power from the blower. And if the lightweight empty container which does not contain the contents is blown off to another belt conveyor (second belt conveyor) arranged in parallel on the belt conveyor, these are not conveyed downstream from the wind power sorter. The installation space of the sorting system was made compact, and it was found that manual sorting of empty bottles and collection containers containing residues, which is performed on the downstream side of the conveyor from the wind sorter, became easier, and the present invention was completed. .

  The present invention can reduce the installation space of the sorting processing system and improve the workability of manual sorting between the empty bottle and the collection container containing the contents performed at the downstream end of the first belt conveyor. The purpose is to provide a system for sorting and collecting mixed collection waste.

The invention according to claim 1 is a mixed collection waste for sorting mixed collection waste mixed with collection containers including cans, bottles, and PET bottles being conveyed by the first belt conveyor for each type of the collection containers. In this sorting processing system, the second belt conveyor arranged in parallel to the side of the first belt conveyor and the middle part of the first belt conveyor are provided, and each of the contents being conveyed is not included. lightweight empty containers consisting of the can and the plastic bottle, together with and a wind sorter to blow up the second belt conveyor by the wind, the mixed-collecting waste include bottles debris, said first belt conveyor of course part of the above the second conveyor belt side portion, the collection container excluding the weight empty containers, wherein the wind action of the wind sorter second The stopper path for preventing the movement toward the belt conveyor is arranged, of the middle portion of the first belt conveyor, wherein the said second conveyor belt side portions than the stopper, the lower the stopper It is a mixed collection waste sorting processing system in which a drop opening for the bottle fragments passing through the gap is formed .

“Mixed collection waste” as used herein refers to collection containers (beverage containers), various sheet pieces including broken pieces of mixed collection waste collection bags, broken pieces of bottles, various types of garbage with different sizes and materials, etc. This is a mixture of Among these, the collection container may be either containing or not containing the contents.
The “collection container” referred to here mainly includes cans, bottles, and plastic bottles (plastic containers), and the mixing ratio and the like thereof differ for each collection. The plastic container is a container made of plastic, such as a plastic bottle, and the material is a general-purpose resin such as polyethylene or polypropylene, or a functional resin such as polyethylene terephthalate.
A lightweight empty container is a can (empty can) that does not contain the contents and a plastic bottle (empty plastic bottle) in which no contents remain. For this reason, the bins, which are heavy objects that are not blown away by the air blown from the wind power sorter, and the cans and the plastic bottles, each containing the contents, are directly conveyed downstream by the first belt conveyor. Incidentally, "empty container" includes not only this lightweight empty container but also an empty bottle.
The cans are steel cans (including tin cans) and aluminum cans.

The first belt conveyor and the second belt conveyor rotate an endless belt between a head pulley and a tail pulley and rotate (rotate), and put a corresponding mixed collection waste or a lightweight empty container on the conveyance path. It is a device to convey.
“The second belt conveyor is arranged in parallel on the side of the first belt conveyor” means that the conveying paths of the belt conveyors are in a parallel state. The transport direction of the lightweight empty containers of the second belt conveyor may be the same as or opposite to the transport direction of the mixed collected waste of the first belt conveyor.
In addition, a pair of side walls may be erected on both sides (both sides in the width direction) of the conveyance path of each belt conveyor so as to surround the corresponding belt conveyor. The type of each side wall is not particularly limited. For example, it is not limited to a plate material, and may be a net-like material such as a fence wire mesh. Moreover, you may cover the corresponding belt conveyor with a ceiling wall.
In the middle of the conveyance path of the first belt conveyor, a wind power sorter is provided to sort the lightweight empty container from the mixed collection waste.

The wind power sorter separates (sorts) only the lightweight empty container from the collection container by blowing the mixed collection waste on the first belt conveyor.
The structure of the wind power sorter is arbitrary. For example, the middle part of the first belt conveyor and the middle part of the second belt conveyor are communicated with each other by a communication path orthogonal to the conveying path of each belt conveyor, and among the middle parts of the first belt conveyor A blower is provided on the side opposite to the communication path, and a lightweight empty container on the conveyance path of the first belt conveyor is conveyed by the compressed air ejected from the blower to the second belt conveyor via the communication path. You may employ what is pumped to the road. The communication path may be, for example, one that extends in a straight line and has a side wall surface, a bottom surface, and an upper surface (ceiling surface) and has a rectangular cross section. If it carries out like this, the flow of a strong wind can be formed in a communicating path.
The structure of the blower is not limited. For example, a device that blows in the horizontal direction in a direction orthogonal to the conveying direction of the first belt conveyor (including a direction that is substantially orthogonal) by the rotational movement of the impeller, a so-called blower, or the like can be employed. The blower blow output is not particularly limited, but it is necessary to have an output that blows up the lightweight empty container conveyed to the first belt conveyor and blows it up to the second belt conveyor through the communication path, for example.
The lightweight empty container blown off by the jet of compressed air from the blower is transferred onto the transport path of the second belt conveyor.

In particular, the mixed collection waste includes bin fragments and is disposed in the middle of the first belt conveyor. That is, a collection container excluding the lightweight empty container is above the side portion on the second belt conveyor side. , Moving toward the second belt conveyor by the action of wind power of the wind sorter A stopper for blocking is arranged, and the stopper is provided in the middle of the first belt conveyor. More, the portion on the second belt conveyor side passes through the gap below the stopper. This is a sorting and processing system for mixed collection waste in which a bin spout is formed.

As the stopper, for example, a plate material, a block material, or the like can be employed. As a material for the stopper, for example, various metals such as iron, stainless steel, tin, zinc, and aluminum alloy can be used. In addition, various synthetic resins such as polycarbonate, polypropylene, polyvinyl chloride, and ABS resin, and various trees such as cedar, pine, and oak may be used.
The formation position of the stopper is in the middle of the first belt conveyor provided with the wind power sorter, and the end (side, edge) of the endless belt constituting the transport path on the second belt conveyor side. Above. As a result, a gap for the bin fragments to pass through appears between the upper surface of the conveyance path and the lower surface of the stopper. The specific height (width) of the gap is about several centimeters.
The shape and size of the bin fragment drop port are arbitrary as long as the bin fragment can be dropped.
The formation position of the dropping port is a portion on the second belt conveyor side of the stopper in the middle of the first belt conveyor, more specifically, from the end of the transport path (endless belt) on the second belt conveyor side. The outer part.

The mixed collection waste is small trash and garbage that can be blown off by the wind power sorter. And the second belt conveyor has an upward slope having side walls on both sides in the width direction. The second belt conveyor is blown away by the wind power sorter. The above-mentioned lightweight empty container, the small garbage and the sheet piece collide above the flying position. The lightweight empty container is dropped onto the second belt conveyor, while the second belt conveyor Through the plurality of slits formed at a predetermined pitch in the longitudinal direction of the A comb-shaped sieve that allows the sheet piece to pass therethrough is disposed, and the comb-shaped sieve is the second belt conveyor. The plurality of comb-tooth members extending in the width direction of the taper gradually incline downward toward the tooth tip, 2 is a member inclined upward at the same angle in the same direction as the belt conveyor, and the tooth tip of the comb-shaped sieve , Between the pair of side walls and the upper edge of the side wall disposed on the opposite side to the first conveyor side In the mixed collection and disposal, a tooth gap is formed to allow the small dust and the sheet piece to pass through. It can also be set as an object sorting processing system.

Examples of small garbage include can pull tabs, bottle and plastic bottle caps, pebbles, wooden pieces, plastic pieces, and the like.
Examples of the sheet piece include a fragment of a collection bag of mixed collection waste, a vinyl piece, a paper piece, and a cloth piece.
Here, “the flying position of the lightweight empty container, small garbage and sheet pieces blown by the wind power sorter on the second belt conveyor” refers to the traveling direction of the compressed air blown from the wind power sorter and the second This is the position where the belt conveyor conveyance path intersects.

The comb-shaped sieve is a sieve in which each base end portion is coupled by a coupling member, and a plurality of comb-tooth members are arranged in a comb-teeth shape at a predetermined pitch.
The material of the comb-shaped sieve is not limited. For example, various metals such as iron, stainless steel, aluminum alloy, various synthetic resins such as polypropylene, polyethylene, polycarbonate, polyamide, polyvinyl chloride, and ABS resin, and various trees such as cedar, pine, and oak can be adopted. it can. A slit is arranged between each comb-tooth member.
The tooth tip gap here refers to the upper tip of the tooth tip of the comb-shaped sieve (each comb tooth member) and the side wall of the second belt conveyor disposed on the side opposite to the first conveyor side. It is an elongate opening that appears between the upper edge. The upper edge of the side wall and the tooth tip of the comb-shaped sieve are maintained in a parallel state over the entire length in the width direction of the tooth tip (the length direction of the second belt conveyor).

The width of each slit and the height (width) of the tooth gap are arbitrary as long as small dust and sheet pieces can pass through but light weight empty containers cannot pass through. For example, it is 10 mm to 60 mm. If it is less than 10 mm, small trash and sheet pieces cannot pass through the slits and the tooth gaps. Moreover, if it exceeds 60 mm, there exists a possibility that a lightweight empty container may pass a slit or a tooth gap. Moreover, it is preferably 15 mm to 35 mm.
The inclination angle of the tooth tip of the comb-shaped sieve (the upper edge of the opposing side wall) is arbitrary. For example, it is 10 ° to 45 °. If the angle is less than 10 °, the installation space for the second belt conveyor cannot be further reduced. If the angle exceeds 45 °, the upper edge of the side wall that is kept in parallel with the tooth tip, and the inclination angle of the second belt conveyor becomes too large, and there is a risk that the lightweight empty container being transported slides down the transport path. There is.

Furthermore, what is conveyed by the second belt conveyor includes an aluminum can and a PET bottle that do not include the contents, and the small dust and the sheet piece that cannot pass through the slits and the tooth gap. Sorting by mixing aluminum cans that do not contain the contents using a rotating magnetic field from the lightweight mixed collection waste carried out from the second belt conveyor with the mixed lightweight collection waste. A plurality of rotating rolls are arranged in parallel at a predetermined pitch on an aluminum sorter and a lightweight mixed collection waste disposed immediately below the discharge part of the aluminum sorter and from which the aluminum can not containing the content is removed. Rolls that are received by a roll screen and sort out PET bottles that do not contain the contents on a sieve, and that drop the small garbage and the sheet pieces under the sieve. The roll screen is provided with a three-stage sorting device having a lean-type sieving machine, and the roll screen has an inclination angle of 5 ° to 15 ° that gradually descends toward the carry-out direction of the PET bottle not containing the contents. It can also be set as the mixed collection waste sorting processing system .

“Lightweight mixed collection waste” refers to empty aluminum cans and empty PET bottles that constitute lightweight empty containers, and other lightweight empty containers from the first belt conveyor to the second belt conveyor by wind power from the wind sorter. Refers to large-sized small trash and sheet pieces that could not pass through the slits and tooth tip gaps of the comb-shaped sieve when the air flies.
Aluminum sorter is a device configured to repel the aluminum can by repelling the magnetic field generated by rotating the magnet at high speed and the magnetic field due to the eddy current generated in the aluminum can by the magnetic field. is there. For example, as a belt conveyor type aluminum sorter, it is possible to adopt a device in which a rotating rotor having magnets is built in a head pulley and the rotating rotor is rotated by a motor at, for example, 1,000 rpm to 2,000 rpm. .

The roll screen type sieve is provided with a plurality of rotating rolls arranged in parallel at a predetermined interval, a driving motor for rotating each rotating roll, and a chain for connecting the driving motor and each rotating roll. A plurality of rotating disks are attached to the outer peripheral surface of the roll shaft in the form of an abacus. Therefore, the gap formed between the roll shafts and between the rotating disks becomes the sieve mesh. The shape of the rotating disk is arbitrary. For example, it may be a circle, a triangle, or a polygon more than a quadrangle. The number of rotating disks arranged on one rotating roll is arbitrary as long as it is plural.
When the roll screen type sieve is in operation, by driving the drive motor, each rotating roll rotates through the chain and the aluminum cans that do not contain the contents that fall on the upstream side of the roll screen are removed. Waste is sieved while being gradually conveyed downstream.

The three-stage sorting device is equipped with an aluminum sorter and a roll screen type sieve placed below, and in the upper stage of the three-stage sorter, an empty aluminum can that is flew by the aluminum sorter In the middle part, empty PET bottles are separated on the roll screen sieve of the roll screen type sieve machine, and in the lower part, small trash and the like that have dropped from the roll screen sieve of the roll screen type sieve machine are separated. Sort the sheet pieces. What is discharged from these upper, middle and lower stages is, for example, carried out from the three-stage sorting apparatus by various conveying devices (for example, belt conveyors) disposed downstream of each passage. May be.
When the inclination angle of the roll screen is less than 5 °, the time for sorting the lightweight mixed collection waste by the roll screen becomes long. If the angle exceeds 15 °, the amount of small garbage or sheet pieces mixed into the empty PET bottle discharged from the sieve increases. The tilt angle of the roll screen can be changed by various tilt angle changing means. When the tilt angle changing means is provided, the tilt angle of the roll screen is changed according to the amount of lightweight mixed collection waste (especially empty plastic bottles) from which the empty aluminum can has been removed, and it is optimal for the amount dropped It is possible to adjust the sorting speed and the sorting accuracy.

According to the first aspect of the present invention, the aluminum containing no contents from the conveying path of the first belt conveyor by the wind force from the wind power sorter during the conveyance of the mixed collection waste by the first belt conveyor. A lightweight empty container composed of a can (empty aluminum can) and a PET bottle (empty PET bottle) is blown off to the second belt conveyor.
As described above, since the first and second belt conveyors that are divided into two parts are arranged in parallel as a belt conveyor of the sorting processing system instead of one long conveyor, the installation space of the sorting processing system is reduced. Miniaturization can be achieved.
Moreover, since the lightweight empty container is removed in advance by the wind power sorter, the workability of manual selection between the empty bottle and the collection container containing the residue performed at the downstream end of the first belt conveyor is improved. Can do. Thereby, it is possible to reduce the number of personnel engaged in hand sorting.

In particular, when a lightweight empty container is blown off to the second belt conveyor by wind power from the wind sorter, the collection container remaining in the transport path of the first belt conveyor is caused by the action of the wind force to the second belt conveyor side. May try to move (blow away). However, when the stopper prevents the movement, it is possible to prevent a collection container such as a broken piece of the bottle from moving (spilling out) from the first belt conveyor.
In addition, when the wind force acts, the bin fragments remaining on the conveyance path of the first belt conveyor move toward the second belt conveyor, and after passing through the gap under the stopper, fall into the dropping port, 1 is discharged below the belt conveyor. Thereby, the operation | work which an operator removes bin fragments from the conveyance path of a 1st belt conveyor can be omitted. Conventionally, the broken pieces of the bottle have moved and adhered to the back side of the conveyor belt, and have damaged the urethane belt body. This problem is solved by providing a drop opening for the broken piece of the bottle.

Furthermore, the conveyor the mixture collecting waste, comprising a small dust Contact and sheet piece that can be blown by the wind sorter, said second belt conveyor is disposed upstream inclined obliquely having sidewalls on both sides in the width direction in, wherein the second belt conveyor, the light weight air container blown blown by the wind sorter, above the air position of the small dust and the sheet pieces, collided the weight empty container the second while dropping the belt conveyor, of the second Berutokon bare longitudinally through a plurality of slits formed at a predetermined pitch, comb sieve passing the small garbage and the sheet piece is disposed, the comb sieve, said with the second belt conveyor a plurality of comb teeth members extending in the width direction of a is gradually inclined downward toward the tooth tip, the same side as said second belt conveyors A member which is inclined upward at the same angle, and the tooth tip of the comb sieve, one of the pair of side walls, wherein the first conveyor side between the upper edge of arranged on the opposite side sidewall , if the aforementioned small garbage and the mixtures collected wastes tooth tip gap is formed for passing a sheet piece sorting processing system, the wind of the wind sorter, lightweight empty containers from the first conveyor belt, a small trash And a sheet piece is blown off toward the 2nd belt conveyor. When these reach the flying position of the second belt conveyor, the lightweight empty container collides with the comb-shaped sieve and falls onto the conveying path of the second belt conveyor. On the other hand, small dust and sheet pieces pass through each slit and tooth tip gap of the comb-shaped sieve, so unnecessary small dust and sheet pieces are discharged out of the second belt conveyor without performing dedicated removal operations. can do.
In addition, since the tooth tip gap is formed between the tooth tip of the comb-shaped sieve and the upper edge of the side wall opposite to the first conveyor side in this way, these small dust and Even if the sheet pieces are guided by the respective comb-teeth members inclined downward and gathered between the tooth tips of the comb-shaped sieve and the upper edge of the side wall, it is difficult for the sheet pieces to accumulate in this portion, and maintenance becomes easy.

Furthermore, the what is conveyed by the second belt conveyor, the contents and the aluminum cans and PET bottles that do not contain a said small garbage and the sheet pieces could not be passed through each slit and the tooth tip clearance lightweight mixture collected waste bets are mixed, from among the said weight mixture collected waste is unloaded from the second bell Tokonbea, by utilizing the rotating magnetic field to fly the aluminum cans not including the Description thereof and aluminum separator to in sorting, are disposed immediately below the emissions part of the aluminum separator, the contents of the lightweight mixture collected waste aluminum cans have been removed does not contain a plurality of rotating rolls at a predetermined pitch receiving by the parallel arranged roll screen, with sorting bottles not including the contents on a sieve, row of dropping the small garbage and the sheet pieces under the sieve Comprising a three-stage separation device having a screen type sieve machine, the roll screen, the inclination angle of the inclined Ri lower gradually toward the unloading direction of the PET bottle that does not include the contents of the 5 ° to 15 ° If the sorting processing system of mixture collected wastes, lightweight mix collecting waste discharged from the second conveyor belt reaches the aluminum separator, by using a rotating magnetic field here, it does not include the contents An aluminum can (empty aluminum can) is bounced off the discharge part of the aluminum sorter. On the other hand, the lightweight mixed collection waste from which the empty aluminum can has been removed falls directly under the discharge part of the aluminum sorter and is separated by a roll screen type sieve. That is, PET bottles (empty PET bottles) that do not contain contents are collected from the top of the sieve, and small garbage and sheet pieces are collected from the bottom of the sieve.
In addition, since the angle placed on the roll screen's downward slope is 5 ° to 15 °, lightweight mixed collection waste from which empty aluminum cans have been removed in a short sorting time can be used with high precision empty PET bottles and small trash. And can be separated into sheet pieces.

1 is a plan view of a mixed collection waste sorting system according to Embodiment 1 of the present invention. FIG. 1 is a side view of a mixed collection waste sorting processing system according to Embodiment 1 of the present invention. FIG. It is a perspective view which shows the operating state of the selection processing system of the mixed collection waste which concerns on Example 1 of this invention. It is a longitudinal cross-sectional view which shows the operating state of the wind power sorter which comprises a part of mixed sorting waste sorting processing system concerning Example 1 of this invention. It is a principal part expansion perspective view which shows the state which the small refuse and the sheet | seat piece passed through the slit of the comb-tooth type | mold sieve which comprises a part of sorting processing system of the mixed collection waste which concerns on Example 1 of this invention. In the 2nd belt conveyor which comprises a part of sorting processing system of the mixed collection waste concerning Example 1 of this invention, it is a principal part enlarged front view showing the state where the small garbage and the sheet piece passed through the tooth gap. is there. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged perspective view in which a part of a three-stage sorting apparatus constituting a part of a mixed collection waste sorting processing system according to Embodiment 1 of the present invention is cut away.

  Embodiments of the present invention will be specifically described below with reference to the drawings. Here, for convenience of explanation, the X1 direction is the conveyance direction of the mixed collection waste on the first belt conveyor, the X2 direction is the opposite direction to the conveyance direction of the mixed collection waste on the first belt conveyor, and the Y1 direction is the first direction. 1 in the width direction of the belt conveyor (upward direction in FIG. 1), Y2 direction is the other in the width direction of the first belt conveyor (downward direction in FIG. 1), Z1 direction is upward, and Z2 direction is downward. And

1 to 3, reference numeral 10 denotes a mixed collection waste sorting processing system (hereinafter, sorting processing system) according to Embodiment 1 of the present invention. Cans, bottles, and PET bottles being transported by a first belt conveyor 11. The mixed collection waste A in which the collection containers including is mixed is sorted for each type of the collection container.
This sorting processing system 10 is provided in the middle of the second belt conveyor 12 arranged in parallel to the side of the first belt conveyor 11 and the first belt conveyor 11, and each content being conveyed is transferred. It includes a wind power sorter 13 that blows off a lightweight empty container composed of cans and PET bottles that are not included to the second belt conveyor 12 by wind power.

Hereinafter, with reference to FIGS. 1-4, these structures are demonstrated concretely.
The first belt conveyor 11 and the second belt conveyor 12 are conveying devices in which a rubber endless belt C is stretched around a head pulley and a tail pulley that are separated in the X1-X2 direction. The width of the endless belt C of the first belt conveyor 11 is about 100 cm and the length is about 10 m, for example. On both sides of each belt conveyor 11, 12, a pair of side walls 15, 37 are erected so as to surround the corresponding belt conveyors 11, 12. The second belt conveyor 12 is a conveying device that gradually tilts up and down, in which the endless belt C has a width of, for example, 100 cm and a length of about 5 m.
Each belt conveyor 11, 12 rotates a head pulley by a drive motor, and thereby rotates (rotates) the endless belt C, whereby the mixed collection waste A or the lightweight mixed collection placed on the endless belt C Each waste B is conveyed in the X1 direction. Between each belt conveyor spaced apart in parallel, it becomes a work space for an operator to manually sort aluminum cans, bottles, and the like containing contents. The main structures of the belt conveyors 11 and 12 may be different in the transport direction as appropriate, but the same applies to the waste supply belt conveyor 17 and the plastic bottle transport conveyor 21 described later.

  The bag breaker 16 used when supplying the mixed collection waste A of the processing raw material to the first belt conveyor 11 is separated from the end (downstream part) on the X2 side of the first belt conveyor 11 in the Y2 direction. It is arranged at the position. A waste supply belt conveyor 17 extending in the Y1-Y2 direction is installed between the bag breaker 16 and the end of the first belt conveyor 11 on the X2 side. The plastic bag is broken by the bag breaker 16 and the mixed collection waste A including broken bottle fragments falls on the Y2 side end of the waste supply belt conveyor 17, and then the endless belt C rotates. Accordingly, the sheet is transferred in the Y1 direction and transferred from the Y1 side end to the X2 side end of the first belt conveyor 11.

A known magnetic separator (magnetic separator) 18 is disposed at a portion on the X2 side from the intermediate position in the length direction of the first belt conveyor 11. As for the collection container conveyed in the X1 direction by the first belt conveyor 11, only the steel can is first sorted by the magnetic separator 18 and the empty steel can collection box 19 arranged on the Y1 side of the magnetic separator 18 is used. It is dropped and removed. Thereafter, the steel can is pressed by an empty steel can press 20. On the Y1 side of the empty steel can collection box 19, a PET bottle transport belt conveyor 21 for hand sorting that is long in the X1-X2 direction is arranged. The manual sorting plastic bottle transport belt conveyor 21 has a downstream end disposed above an empty plastic bottle collection box 22 to be described later, and is collected. On the other hand, collection containers that do not react with magnetic force, such as PET bottles, aluminum cans, and glass bottles (including bottle fragments) pass through this magnetic separator 18.
In addition, in the middle part of the first belt conveyor 11, specifically, on the X1 side portion from the intermediate position in the length direction of the first belt conveyor 11, an empty aluminum can being transported, an empty plastic bottle, A wind power sorter 13 is provided for blowing small trash and sheet pieces to the second belt conveyor 12 by wind power.

Hereinafter, the wind power sorter 13 will be described in detail.
As shown in FIGS. 1 to 6, the wind power sorter 13 includes eight sets of 24 blowers arranged on the end of the endless belt C on the Y1 side in a vertical and vertical direction with a predetermined pitch in the X1-X2 direction. 23. From each blower 23, the lightweight air container which reached the middle part of the 1st belt conveyor 11 by ejecting the compressed air produced | generated by the external air compressor 24 to a Y2 direction to the 2nd belt conveyor 12 Blow away.
Further, in the middle part of the first belt conveyor 11, a lightweight empty container (recovery containing contents) is provided above the side part on the Y2 side of the endless belt C by the action of the wind power of the wind power sorter 13. Two parallel elongated stopper plates (stoppers) 25 for preventing the collection container excluding the containers and the bottles) from moving toward the second belt conveyor 12 are arranged.

  Further, in the middle part of the first belt conveyor 11, the gap between the lower edge of the lower stopper plate 25 and the conveying surface of the endless belt C is located on the second belt conveyor 12 side of each stopper plate 25. A drop opening 26 is formed through which the bin pieces a that have passed through fall outside the conveyor. A chute 28 for discharging the dropped bin fragments a to the outside of the conveyor through a through hole 27 formed in the side wall 15 on the Y2 side of the first belt conveyor 11 is arranged immediately below the dropping port 26. Yes. Moreover, the fall which sprays the compressed air for discharging | emitting the bottle piece a which fell to the dropping port 26 smoothly from the through-hole 27 on the back surface of the edge part by the side of Y2 among the lower walls of the 1st belt conveyor 11 A guide nozzle 29 is provided. Further, a fall prevention plate 30 that is gradually inclined downward in the Y2 direction is disposed above the drop opening 26 in order to prevent a lightweight empty container over the stopper plate 25 from falling into the drop opening 26. ing. In addition, near the lower end of the fall prevention plate 30, a plurality of auxiliary nozzles 32 for blowing off the lightweight empty containers that have fallen into the communication duct 31 described later in the Y2 direction are arranged in a line at a predetermined pitch in the X1-X2 direction. Are lined up.

Further, the bin that has not been blown off due to its weight and the collection container b (in which the contents are contained) (FIG. 4) pass through this wind power sorter 13 and are further downstream by the first belt conveyor 11. It is conveyed to.
In this downstream portion, for example, a glass bottle and a bottle other than the bottle are sorted by hand sorting and collected individually.
In addition to the air compressor 24, the wind sorter 13 has a wind sorter main body 33 as a duct that is a passage of compressed air. The wind power sorter main body 33 is connected to the pair of side walls 15 in a gate shape, and covers the middle portion of the first belt conveyor 11 from above in a rectangular tunnel shape, and a gate shape cover portion 34. It is connected to the end portion on the Y2 side of the shape cover portion 34, and communicates the middle portion (middle stream portion) of the first belt conveyor 11 and the upstream portion (end portion on the X2 side) of the second belt conveyor 12, The communication duct 31 is tapered with a rectangular cross section. A communication path is arranged in the communication duct 31. A rectangular opening that communicates with the upstream opening 31 a of the communication duct 31 is formed in the side wall 15 on the Y2 side of the first belt conveyor 11. The downstream opening 31 b of the communication duct 31 is disposed on the side wall 37 on the Y1 side of the second belt conveyor 12. The upstream portion of the second belt conveyor 12 that faces the downstream opening 31b of the communication duct 31 is a position where the lightweight empty container, small dust, and sheet pieces blown off by the wind power sorter 13 come.

On the upper edge forming portion of the downstream opening 31b of the communication duct 31, the colliding lightweight empty container is dropped onto the second belt conveyor 12 above the flying position c of the lightweight empty container, small dust and sheet pieces. A comb-shaped sieve 35 for passing small dust and sheet pieces through a plurality of slits S formed at a predetermined pitch in the length direction of the second belt conveyor 12 is disposed.
In the comb-shaped sieve 35, a plurality of comb-tooth members 36 extending in the width direction (Y1-Y2 direction) of the second belt conveyor 12 are gradually inclined downward toward the tooth tip, and the second belt conveyor 12 A member inclined upward at the same angle (about 30 °) in the same direction (X1 direction) as the side wall 37 on the Y1 side, and the tooth tip of the comb-shaped sieve 35 and the side wall 37 on the Y1 side of the second belt conveyor 12 A tooth tip gap d through which small dust and sheet pieces pass is formed between the upper edge and the upper edge. The width of each slit S and the height of the tooth tip gap d are each 25 mm. The base end part of each comb-tooth member 36 is connected by the connection member 35a long in the X1-X2 direction.

In addition, an upward guide plate 39 projects in the Y2 direction at the lower edge forming portion (the tip of the ejection port) of the downstream opening 31b of the communication duct 31. Thereby, an empty aluminum can and an empty plastic bottle can be made to collide instantaneously with the lower surface of the comb-tooth member 36, and the fall can be made easy. Moreover, since a light sheet piece or the like is blown up by the upward guide plate 39, the vacuum effect of the dust collection tower 14 to be described later can be enhanced, and the sheet piece is unlikely to be entangled with each comb tooth member 36.
On the Y2 side upstream of the second belt conveyor 12, a square-shaped dust collection tower 14 for collecting small dust and sheet pieces that have passed through the slits S and the tooth tip gaps d is provided upright. A suction cylinder 38 is provided at the center of the upper wall of the dust collection tower 14 to discharge light small dust and sheet pieces by sucking them with the negative pressure of the vacuum device. In the lower part of the garbage collection tower 14, a garbage collection box 14a for collecting relatively heavy small garbage and sheet pieces is stored. Covering the side wall on the Y1 side of the dust collection tower 14 with a comb-shaped sieve 35 from above, a gate-shaped sieve cover that prevents external scattering of small dust or the like passing through the slit S and the tooth gap d 46 is connected.

Immediately below the downstream end of the second belt conveyor 12 is an aluminum sorter for sorting empty aluminum cans out of empty aluminum cans, empty PET bottles, small garbage and sheet pieces discharged from the second belt conveyor 12. The machine 40 is horizontally arranged through a gantry 47. This aluminum sorter 40 constitutes a part of a three-stage sorting device 48 described later.
The aluminum sorter 40 has a head pulley with a built-in rotating rotor with magnets and a short belt conveyor 49 arranged at the end of the X1 side as the main body of the apparatus. By rotating at a high speed of 500 rpm, the generated magnetic field is repelled by the magnetic field due to the eddy current generated in the empty aluminum can by this magnetic field, and the empty aluminum can is flipped off in the X1 direction.

Hereinafter, the three-stage sorting device 48 will be described with reference to FIGS. 2 and 7.
The three-stage sorting device 48 is arranged immediately below the aluminum sorter 40 and the discharge part of the aluminum sorter 40, and the light mixed collection waste B from which the empty aluminum can has been removed is separated into a plurality of rotating rolls 50. Is received by a roll screen 45 arranged in parallel at a predetermined pitch, and an empty PET bottle is selected on the sieve, and a small screen and a sheet piece are dropped under the sieve. And a three-stage fractionation tower 51 having a substantially rectangular box shape constituted by a roll screen 45.

The roll screen sieve 44 includes a plurality of rotating rolls 50 arranged in parallel at a predetermined interval, one driving motor that rotates each rotating roll 50, and a chain that connects the driving motor and each rotating roll 50. Each rotary roll 50 is formed by attaching a plurality of rotary disks 52 in the form of an abacus on the outer peripheral surface of a roll shaft. Therefore, the gap formed between the roll shafts and between the rotating disks becomes the sieve mesh. The shape of the rotating disk 52 is a disk shape. The roll screen 45 constitutes the lower wall of the three-stage sorting tower 51 in a state where the roll screen 45 is gradually inclined downward toward the carry-out direction (X1 direction) of the empty PET bottles. The inclination angle θ of the roll screen 45 is 8 °. Immediately below the roll screen 45 is disposed a dust receiving pallet 53 for receiving small dust and sheet pieces that have fallen.
During the operation of the roll screen type sieve 44, by driving the drive motor, each rotary roll 50 rotates through the chain, and the lightweight mixed collection waste B from which the empty aluminum can has been removed is upstream of the roll screen 45. And is sieved while being gradually conveyed downstream. That is, empty PET bottles larger than the sieve mesh are conveyed downstream and discharged to the outside while bouncing in contact with the rotating disks 52. On the other hand, small dust and sheet pieces smaller than the sieve mesh are discharged out of the three-stage sorting tower 51 through the sieve mesh.

In the three-stage sorting column 51, an insertion port 51a that is long in the Y1-Y2 direction into which the carry-out part 40a of the aluminum sorter 40 is inserted is formed at the intermediate height portion of the side wall on the X2 side. Further, the lower part of the side wall 51b on the X1 side of the three-stage sorting tower 51 is gradually inclined downward (inclination angle is about 45 °) toward the X1 direction. The internal space of the three-stage sorting tower 51 is divided into an upper stage portion (upper layer section) having an empty aluminum can sorting passage 55 and an empty PET bottle sorting passage 56 by a partition plate 54 that is gradually inclined downward in the X1 direction. It is divided into a middle step portion (middle layer portion).
Among these, the lower opening of the empty plastic bottle sorting passage 56 is disposed on the upstream portion (the end portion on the Y2 side) of the empty plastic bottle discharging belt conveyor 57 that is long in the Y1-Y2 direction. The lower opening of the empty aluminum can separation passage 55 is disposed on the upstream portion (the Y2 side end) of the empty aluminum can discharge belt conveyor 41 that is long in the Y1-Y2 direction. The empty plastic bottle discharge belt conveyor 57 is juxtaposed on the X1 side of the dust receiving pallet 53, and the empty aluminum can discharge belt conveyor 41 is juxtaposed on the X1 side of the empty plastic bottle discharge belt conveyor 57. .
An empty plastic bottle collection box 22 is disposed immediately below the downstream portion (Y1 side end) of the empty plastic bottle discharging belt conveyor 57, and the empty plastic bottle dropped here is sent by an empty plastic bottle press machine 58. It will be pressed. Also, an empty aluminum can collection box 42 is disposed immediately below the downstream portion (Y1 side end) of the empty aluminum can discharge belt conveyor 41, and the empty aluminum can dropped into the empty aluminum can press machine 43 is pressed. Empty plastic bottles and empty aluminum cans (the same applies to empty steel cans) after pressing will be used effectively as resources.

Next, with reference to FIG. 1 to FIG. 4, a mixed collection waste A sorting method by the mixed collection waste sorting system 10 according to Embodiment 1 of the present invention will be described.
Plastic bags containing mixed collection waste A containing cans, plastic bottles, bottles (including bottle fragments a), small trash, sheet pieces, etc., collected from supermarkets, etc., are put into the bag breaker 16 and put into vinyl. The bag is broken. Here, the mixed collection waste A falls to the upstream portion of the waste supply belt conveyor 17 and is transferred from the downstream portion thereof to the upstream portion of the first belt conveyor 11 as the endless belt C rotates. .
Thereafter, the mixed collection waste A is conveyed from the upstream portion of the first belt conveyor 11 in the X1 direction as the endless belt C rotates. On the way, when the mixed collection waste A reaches just below the magnetic separator 18, only the steel can is selected from the mixed collection waste A by magnetic deposition and removed. After the removal, the steel can is collected in an empty steel can collection box 19 arranged on the Y1 side, and is pressed by an empty steel can press machine 20 to be used as a resource. When the mixing ratio of the PET bottles is large, the empty PET bottles are recovered using the PET bottle transport belt conveyor 21 for manual selection arranged on the Y1 side of the empty steel can recovery box 19.

Thereafter, when the mixed collection waste A from which the steel can has been removed reaches the portion where the wind power sorter 13 is arranged in the vicinity of the middle portion of the first belt conveyor 11, the compressed air from each blower 23 is compressed. Blowing in the Y2 direction, empty aluminum cans, empty PET bottles, small garbage and sheet pieces pass through the communication duct 31 and are blown off to the second belt conveyor 12 arranged in the Y2 direction.
At this time, the collection container containing the bottles and contents that have not been blown off due to its weight passes through the wind power sorter 13 and is conveyed further downstream of the first belt conveyor 11. In this downstream portion, a plurality of workers collect the glass bottles by hand sorting and those other than the bottles.

In addition, when this wind force acts, a collection container (a can containing a content, a plastic bottle, a bottle) excluding a lightweight empty container remaining in the transport path of the first belt conveyor 11, a bottle without a content, etc. However, it moves to the Y2 side. At this time, this movement is blocked by two parallel stopper plates 25. Thereby, it can prevent that the collection | recovery container except a lightweight empty container moves to the communicating duct 31 direction from the opening of the edge of the 1st belt conveyor 11 by the side of the 2nd belt conveyor 12. FIG.
Moreover, when the wind force acts, the bin pieces a remaining on the conveyance path of the first belt conveyor 11 move toward the second belt conveyor 12 and leave the gap below the lower stopper plate 25. After passing, it falls to the drop port 26, and is then discharged out of the first belt conveyor 11 through the chute 28 and the through hole 27 in order while being guided by the compressed air from the drop guide nozzle 29. Thereby, the operation | work which an operator removes the bin piece a from the conveyance path of the 1st belt conveyor 11 can be omitted. Also, it is possible to prevent injuries during the work of the operator.
The lightweight empty container over the stopper plate 25 is prevented from falling to the drop opening 26 by the fall prevention plate 30. Further, the lightweight empty container that has passed over each stopper plate 25 and dropped into the communication duct 31 is further blown off in the Y2 direction by the compressed air from each auxiliary nozzle 32 and reaches the second belt conveyor 12.

  Next, the lightweight empty containers, small trash, and sheet pieces blown off from the first belt conveyor 11 toward the second belt conveyor 12 by the wind power of each blower 23 are the flying position c of the second belt conveyor 12. , The lightweight empty container collides with the comb-shaped sieve 35 and falls to the upstream side of the conveying path of the second belt conveyor 12. On the other hand, since the small dust and sheet pieces pass through the slits S and the tooth tip gaps d of the comb-shaped sieve 35, the second belt conveyor can be used without carrying out a dedicated removal operation for unnecessary small dust and sheet pieces. 12 can be discharged to the outside. In particular, since the discharged small garbage and the sheet pieces are collected under negative pressure by the garbage collection tower 14, the small garbage having a large specific gravity falls and collects in the garbage collection box 14a, and the light sheet pieces use the suction cylinder 38. Then collect the vacuum. As such, it is possible to satisfactorily separate small trash and sheet pieces having a small specific gravity.

The lightweight empty container that has passed through the communication duct 31 is flipped up by the upward guide plate 39 of the downstream opening 31b, and an empty aluminum can or an empty plastic bottle instantaneously collides with the lower surface of the comb-shaped sieve 35. As a result, the lightweight empty container can be easily dropped to the flying position c of the second belt conveyor 12. Further, a lightweight sheet piece or the like is also blown up by the upward guide plate 39, so that the vacuum effect of the dust collection tower 14 can be enhanced and the sheet piece is less likely to be entangled with each comb tooth member 36.
In addition, since the tooth tip gap d of a predetermined size is formed between the tooth tip of the comb-shaped sieve 35 and the upper edge of the side wall 37 on the Y2 side in this way, the wind power of the wind power sorter 13 temporarily reduces the size. Even if dust or sheet pieces are guided by the downwardly inclined comb-tooth members 36 and gather between the tooth tips of the comb-shaped sieve 35 and the upper edge of the side wall 37 of the second belt conveyor 12, this portion Clogging is unlikely to occur. As a result, maintenance of the second belt conveyor 12 is facilitated.

Next, as shown in FIGS. 3 and 7, the lightweight mixed collection waste B discharged from the downstream end of the second belt conveyor 12 inclined upward reaches the aluminum sorter 40. Here, using a rotating magnetic field, empty aluminum cans are splashed from the discharge part of the aluminum sorter 40, guided by a partition plate 54 inclined downward, and from upstream to downstream of the empty aluminum can discharge belt conveyor 41. After being discharged, it is put into an empty aluminum can collection box 42 on the discharge side, and then pressed by an empty aluminum can press machine 43.
On the other hand, the lightweight mixed collection waste B from which the empty aluminum can has been removed falls immediately below the discharge part of the aluminum sorter 40 and is separated by the roll screen 45 inclined downward of the roll screen type sieve 44. That is, empty PET bottles are collected from the top of the sieve, then discharged from the upstream side to the downstream side of the empty PET bottle discharge belt conveyor 57, and are put into the empty PET bottle collection box 22 on the discharge side. Pressed by a bottle press 58. Then, small dust and sheet pieces under the screen of the roll screen 45 are collected into dust receiving pellets.
Further, since the downward inclination angle θ of the roll screen 45 is set to 8 °, the lightweight mixed collection waste B from which the empty aluminum can has been removed in a short sorting time can be obtained with high accuracy with an empty plastic bottle and small garbage and sheet pieces. And can be separated.

As described above, since the first and second belt conveyors 12 are arranged in parallel as a belt conveyor of the sorting processing system instead of a single long conveyor, the installation space for the sorting processing system is adopted. Can be miniaturized.
Moreover, since the light empty container is previously removed by the wind power sorter 13, the subsequent sorting objects are reduced (for example, reduced to 20%). Thereby, the workability | operativity of the manual selection with the empty bottle performed by the downstream edge part of the 1st belt conveyor 11 and the collection container containing the contents can be improved. Thereby, it is possible to reduce the number of personnel engaged in hand sorting.
Furthermore, since a three-stage sorting device 48 equipped with an aluminum sorter 40 and a roll screen type sieve 44 is employed here, the lightweight empty container and the small dust and sheet piece collection device have a three-dimensional layer structure. Thus, the space for the mixed collection waste sorting processing system 10 can be reduced.

  The present invention is useful as a technique for separating cans, bottles, PET bottles that do not contain contents from the mixed collection waste transported by the belt conveyor, and the others.

10 Mixed collection waste sorting system,
11 First belt conveyor,
12 Second belt conveyor,
13 Wind sorter,
25 Stopper plate (stopper),
26 Drop port,
35 comb-shaped sieve,
36 comb teeth,
37 side walls,
40 Aluminum sorter,
40a discharge part,
44 roll screen sieving machine,
45 roll screen,
48 3-stage sorting device,
50 rotating rolls,
A Mixed collection waste B Lightweight mixed collection waste,
S slit,
a Bin debris,
c Flight position,
d Tooth gap.

Claims (1)

In the mixed collection waste sorting processing system for sorting the mixed collection waste containing the collection containers including cans, bottles, and PET bottles being conveyed by the first belt conveyor for each type of the collection containers,
A second belt conveyor arranged side by side on the side of the first belt conveyor;
A wind power sorter that is provided in the middle of the first belt conveyor and blows off a lightweight empty container composed of the can and the PET bottle not including the contents being conveyed to the second belt conveyor by wind power. And with
The mixed collection waste includes bin debris;
Of the middle part of the first belt conveyor, above the side part on the second belt conveyor side, the collection container excluding the lightweight empty container is the second by the action of wind power of the wind power sorter. A stopper is arranged to prevent movement toward the belt conveyor,
The first of the middle portion of the belt conveyor, wherein the said second belt conveyors side portion from the stopper, mixed collected waste to the bin debris chute is formed passing through the gap below the stopper Sorting processing system for things .

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