JP2000024543A - Sorting apparatus utilizing ascending water flow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sorting apparatus relatively simple to handle and utilizing an ascending water flow capable of generating relative specific gravity difference in a material to be sorted by utilizing an ascending water flow to relatively accurately divide the material to be sorted into light and heavy matters and regulating the speed of the ascending water flow into several stages to also enable the fine sorting of the material to be sorted. SOLUTION: A sorting apparatus is constituted of a water tank 10, an ascending water flow generator 20 provided to the intermediate part in the up and down direction of the water tank 10, a material-to-be-sorted supply apparatus supplying broken pieces or particles of mater W to be sorted from the region above the ascending water flow generator 20, a light matter taking-out device 40 provided in the vicinity of the water surface WL of the water tank 10 and a heavy matter taking-out device 50 provided to a bottom part 19 of the water tank 10. The ascending water flow generator 20 is constituted of lattice like or a plurality of rows of ascending rectified flow generating parts 21 having a large number of passing spaces of heavy matter H.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a water tank for mixing a mixture of wood, plastic, metal and other debris and granules whose size has been adjusted to a certain size or less by a crusher or a pellet forming machine in advance. The present invention relates to a sorting device that uses a rising water flow to generate a relatively specific gravity difference using a rising water flow to separate light and heavy objects.

[0002]

2. Description of the Related Art In recent years, the environment surrounding waste has changed,
Following the "Recycling Resource Promotion Act"
In June 1995, the Law Concerning the Separation and Collection of Containers and Packaging and Promotion of Recycling (Container and Packaging Recycling Law) was enacted and promulgated. The landfill has not been easy. Separation of small and medium-sized materials to be treated, especially mixed wastes, resulting from crushing or the like due to such a change in living environment has become an important issue. Fortunately, lightweight materials such as paper, cloth, plastic, and wood are mostly flammable organic substances,
Since heavy materials such as stones contain many non-combustible inorganic substances, sorting by weight is often performed. Accordingly, various types of mixed waste discharged from the demolition sites of buildings and houses, shredder dust of automobiles, and demolition waste of home electric appliances and OA equipment have been separated and reused as resources, and interest in the development of sorting equipment has been increasing. Has been poured.

Lightweight materials such as wood, plastic and cloth in mixed waste can be reused as recycled fuel and recycled plastic, and must be separated from heavy pieces such as concrete pieces, stones and metals. In addition, the metal can be separated from the heavy object later by further utilizing magnetic force.
First, a separation device using water has been proposed as a simple device for separating light and heavy objects. That is, the mixed waste is released into the pool and separated into those floating in water and those that sink, and further added with salt to increase the specific gravity to float the floating substances in water.

[0004]

The sorter utilizing such water is suitable for a rough sort of whether it floats or sinks in water, but when a specific gravity is changed by adding salt, the sorter is used. In the next step, if it is further finely sorted or reused, harm occurs due to salt content such as generating rust on the metal part of the equipment and disturbing the composition of components, and desalination work was required. . In addition, there are many troublesome aspects such as the need to control the concentration of salt to maintain the changed specific gravity.

The present invention has been devised in view of the above, and uses a rising water flow to generate a relative specific gravity difference between selected objects so that a light object and a heavy object can be connected relatively accurately. The object of the present invention is to provide a sorting device using a relatively simple ascending water flow which can be divided into two stages, and can be divided into several stages by controlling the speed of the ascending water flow. And

[0006]

In order to achieve the above object, a sorting apparatus using a rising water flow according to claim 1 of the present invention is provided in a water tank and an intermediate portion in the vertical direction of the water tank. Ascending water flow generating means, Specimen object supplying means for supplying debris and particulate matter of the mixed culling object from above the ascending water flow generating means, Light-weight object take-out means provided near the water surface of the water tank, And a heavy-goods take-out means provided at the bottom portion of the main body.

Therefore, at the stage where the rising water flow is not generated by the rising water flow generation means, it can be classified into lightweight objects floating on the water and heavy objects sinking. Can be moved. Lightweight objects that have reached near the water surface are
The heavy object submerged in the water bottom is taken out by the heavy object taking out means. The ascending water flow gives an apparent relative specific gravity difference to the original absolute specific gravity of each sorting object, and it is also possible to finely sort in several stages by changing the speed of the ascending water flow . In addition, the objects to be sequentially inputted can be continuously and efficiently sorted without causing salt damage in the next step.

According to a second aspect of the present invention, in the sorting apparatus utilizing the upward water flow according to the first aspect, the upward water flow generating means has a grid-like shape having a large number of spaces through which debris and particulates can fall and pass. Or a plurality of rows of rising rectification generating sections, a pump that sucks water from a tank through a filter and supplies water to the rising rectification generating section, and a water flow control valve with a flow meter provided on the discharge side of the pump The ascending water flow is ascending rectified by a lattice-shaped or a plurality of rows of ascending rectification generating sections, and the difference in flow velocity depending on the location can be eliminated, the sorting accuracy can be improved, and the speed of the ascending rectification can be reduced by the pump discharge side. Can be easily controlled with reference to a flow meter by means of a water flow control valve provided in the apparatus, and it is possible to sort out objects to be sorted which have slightly different specific gravities.

According to a third aspect of the present invention, in the sorting apparatus utilizing the rising water flow according to the first aspect, the object-to-be-sorted supply means is constituted by a feeder for continuously supplying a constant amount of water, and is supplied to the rising water flow. Sorted materials can be supplied at a constant rate, and sorting accuracy can be increased.

According to a fourth aspect of the present invention, in the sorting apparatus utilizing the rising water flow according to the first aspect, the lightweight object take-out means includes an overflow section provided near the water surface of the water tank, It is composed of a separation unit that catches the flowing light objects and a water recovery unit that sends water to the water tank of the ascending water flow generation means. It can be returned and circulated, and an increase in operating costs can be suppressed.

According to a fifth aspect of the present invention, in the sorting device utilizing the rising water flow according to the first aspect, the heavy object take-out means includes a horizontal feed conveyor at the bottom of the water tank and a water obliquely upward from the bottom of the water tank. It is composed of a conveyor provided with a tube extending upward, and can automatically carry heavy objects sinking at the bottom of the water tank above the water surface without causing water to run off.

According to a sixth aspect of the present invention, in the sorting apparatus utilizing the rising water flow according to the second aspect, the rising rectification generating section includes a header section for maintaining a pressure of the water supplied from the pump, and the header section. And a number of nozzles arranged at the top of the section and having a straight outlet section, so that rising rectification can be generated with a simple structure.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a case where a sorting apparatus using a rising water flow according to the present invention is used for sorting shredder dust of an automobile will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of a sorter using a rising water flow according to a representative embodiment of the present invention, and FIG. 2 is a cross-sectional view of a grid-like rectification generating section of the apparatus. 1 and 2, a sorting machine 1 using a rising water flow according to a representative embodiment of the present invention is provided in a vertically long water tank 10 having a rectangular cross section with an open upper end face, and an intermediate portion in the vertical direction. A rising water flow generating device 20, a quantitative supply device 30 for supplying shredder dust of a vehicle from above the device 20, a lightweight object take-out device 40 provided near the water surface WL of the water 10,
And a heavy object take-out device 50 provided at the bottom of the water tank. The shredder dust W of the sorted material is
The paper is cut to a predetermined dimension of, for example, 10 to 15 mm or less by a shredder, and the embedded screws and the like are also loosely released.

The water tank 10 is provided with a rising rectification generator 21 in the form of a lattice of the rising rectification generator 20 in a substantially central portion in the vertical direction, and a fixed supply device 30 opened above the rising rectification generator 21. An inclined supply section 39 is connected, and an overflow section 41 of a lightweight object take-out device 40 is connected near the water surface WL. The screw conveyor 53 has a cylindrical shape and is connected to a lower portion of the oblique cylinder 54 of the screw conveyor 53.

The rising water flow generator 20 has a lattice-shaped rising rectification generating section 21 having a large number of spaces S through which shredder dust can fall and pass therethrough, and draws up water from a water tank 25 via a filter 26 to ascend rectification. It comprises a pump 27 for supplying water from a plurality of locations around the generator 21 and a water flow control valve 28 with a flow meter provided on the discharge side of the pump 27. Ascending rectification generator 21
Is a grid-like header section 22 for maintaining the pressure of water supplied from a pump 27, and a number of nozzles 23 arranged at equal intervals above the header section 22 and having straight outlet sections.
It is composed of The straight outlet portion is constituted by a pair of spaced opposing plates 24, 24, but may take various forms. When the sorter 1 is large, a rectifying plate may be provided above the ascending rectification generating unit 21 as needed to maintain rectification.

Shredder dust quantitative supply device 30
Is constituted by a feeder 33 of a fixed-quantity feeding conveyor of a vibration type or the like. On the other hand, it can be supplied at a constant rate, and the sorting accuracy can be improved. Each mixture in the shredder dust W receives an upward force due to the rising water flow with respect to the original absolute specific gravity, and exhibits an apparent relative specific gravity according to the speed of the rising water flow, and gradually changes from the mixed weight. They are sorted in order from the lightest.

The lightweight object take-out device 40 includes an overflow section 41 provided near the water surface of the water tank 10, a separation section 43 for catching lightweight objects flowing from the overflow section 41 by water, It comprises a water recovery unit 45 that sends water to the water tank 25, and the recovery of lightweight objects is automated. The water that overflows can be returned to the ascending rectification generator 20 and circulated, and the operating cost can be reduced. The separation unit 43 is configured by a mesh belt conveyor that forms a sieve, and allows water to pass through the water recovery unit 45, and sends out the lightweight material L. Light weight L
Is appropriately dehydrated by a centrifuge. Sludge and sludge are removed from the bottom of the water tank 25 as needed.

The weight removal device 50 includes a horizontal screw conveyor 51 at the bottom 19 of the water tank 10 and a cylinder 54 having an outlet connected to the lower part and extending obliquely upward from the water tank bottom 19 and above the water surface. Screw conveyor 5
3 and heavy goods H sinking to the bottom 19 of the water tank.
Automatically above the water surface. Shredder dust W
Contains various plastics and papers from metal pieces and metal particulates. Specific gravity is 0.93 for plastic
Polyethylene floating in water of 0.95 or specific gravity 1.04 ~
1.06 light polystyrene, specific gravity 1.16 to 1.3
There are many things that can be classified by specific gravity, such as soft vinyl chloride of No. 5 and silicone resin having a specific gravity of 1.68 to 2.00. Therefore, a plurality of small-sized apparatuses 1 are arranged side by side, and the carry-out / outlet section 59 of the heavy-weight take-out apparatus 50 of the previous apparatus is configured to face the inlet 31 of the fixed-quantity supply apparatus 30 of the next apparatus 1. By increasing the speed of the water flow to increase the apparent relative specific gravity difference, light plastics can be sequentially and finely separated and sorted.

In the above-described representative embodiment, the object to be sorted W is shredder dust. However, it is needless to say that various kinds of mixtures can be used as long as materials having different specific gravities are mixed. In addition, although the rising rectification generating section 21 is formed in a lattice shape, it is needless to say that the header rectification generating section 21 may also be configured in a plurality of rows.

[0021]

As is apparent from the above description, the sorting apparatus using the rising water flow according to the first aspect of the present invention comprises a water tank and a rising water flow generating means provided at an intermediate portion in the vertical direction of the water tank. And an object supply means for supplying debris and particulate matter of the mixed object from above the ascending water flow generating means, a light-weight removal means provided near the water surface of the water tank, and a bottom part of the water tank. Since it is characterized in that it is composed of a heavy object take-out means, when the ascending water flow is not generated from the ascending water flow generation means, it can be classified into a light-weight object floating on water and a sinking heavy object. An object floating in the water can be moved to the surface of the water by generating a weak rising water flow. The light-weight objects that have reached the vicinity of the water surface are taken out by the light-weight taking-out means, and the heavy objects sinking to the bottom of the water are taken out by the heavy-weight taking-out means. The ascending water flow gives an apparent relative specific gravity difference to the original absolute specific gravity of each sorting object, and it is also possible to finely sort in several stages by changing the speed of the ascending water flow . In addition, the objects to be sequentially inputted can be continuously and efficiently sorted without causing salt damage in the next step.

According to the second aspect of the present invention, in the sorting apparatus utilizing the rising water flow according to the first aspect, the rising water flow generating means includes the debris and particulates falling and passing therebetween. A grid-like or multiple-row ascending rectification generating section having a large number of available spaces, a pump that sucks water from a tank through a filter and supplies water to the ascending rectifying generating section, and is provided on a discharge side of the pump. And the water flow control valve with a flow meter,
Ascending rectification is performed by a lattice-shaped or multiple-row ascending rectification generating section, and the difference in flow velocity depending on the location is eliminated, so that the sorting accuracy can be improved. With reference to the flow meter, it is possible to easily control and sort objects having slightly different specific gravities.

According to a third aspect of the present invention, there is provided a sorting apparatus utilizing a rising water flow according to the first aspect of the present invention, wherein the object supply means includes a feeder for continuously supplying a fixed quantity. Due to the configuration, the sorting object can be supplied at a constant rate to the rising water flow, and the sorting accuracy can be improved.

According to a fourth aspect of the present invention, there is provided a sorting apparatus utilizing a rising water flow, wherein the lightweight object take-out means comprises an overflow provided near a water surface of the water tank. Since it is composed of a section, a separation section that catches light objects flowing by water from the overflow section, and a water recovery section that sends water to the water tank of the rising water flow generating means, the collection of lightweight objects is automated. In addition, the overflowing water can be returned to the rising water flow generating means and circulated, thereby suppressing an increase in operating cost.

According to a fifth aspect of the present invention, there is provided a sorting apparatus utilizing a rising water flow, wherein the heavy object take-out means comprises: a horizontal feed conveyor at the bottom of the water tank; Since it is composed of a conveyor equipped with a tube extending obliquely upward from the bottom of the water tank above the water surface, heavy objects sinking at the bottom of the water tank are automatically raised above the water surface without causing water loss. Can be carried out.

According to a sixth aspect of the present invention, there is provided a sorting apparatus using a rising water flow, wherein the rising rectification generating section is configured to control a pressure of water supplied from the pump. , And a number of nozzles arranged on the header and having a straight outlet, so that ascending rectification can be generated with a simple structure.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a separator using a rising water flow according to a representative embodiment of the present invention.

FIG. 2 is a cross-sectional view of a grid-like rectification generating section of the device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sorting apparatus (sorting machine) using ascending water flow 10 Water tank 19 Bottom 20 Ascending water flow generating means (equipment) 21 Ascending rectification generating section 22 Header section 23 Nozzle 25 Tank 26 Filter 27 Pump 28 Water flow control valve with flow meter 30 Cover Sorted material supply means (apparatus) 33 Fixed-quantity supply feeder 40 Light-weight object take-out means (equipment) 41 Overflow section 43 Separation section 45 Water recovery section 50 Heavy object take-out means (equipment) 54 cylinder W Mixed object to be selected H Heavy object L Lightweight WL Water surface

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 7, 1999 (1999.5.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

The present invention has been devised in view of the above, and uses a rising water flow to generate a relative specific gravity difference between selected objects so that a light object and a heavy object can be connected relatively accurately. The purpose of the present invention is to provide a sorting device that uses a relatively simple ascending water flow that can be handled in two steps, and that can be finely separated into several stages by adjusting the flow speed of the ascending water flow. I have.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

In order to achieve the above object, a sorting apparatus utilizing a rising water flow according to claim 1 of the present invention is provided in a water tank and an intermediate portion in a vertical direction of the water tank, A grid-like or multi-row rising rectification generation unit having a large number of spaces through which debris and particulates can fall and pass, and water is supplied from the water tank to the rising rectification generation unit by sucking up water through a filter. Pump, a rising water flow generating means comprising a water flow control valve provided on the discharge side of the pump,
An object-to-be-supplied supply means for supplying fragments and granules of the mixed object-to-be-sorted from above the rising water flow generating means, an overflow section provided near the water surface of the water tank, and water flowing from the overflow section. A separating unit for catching a light-weight object, a light-weight extracting unit including a water collecting unit for sending water from the separating unit to the water tank, and a heavy-weight extracting unit provided at a bottom of the water tank. , The rising rectification generating section is characterized by comprising a header section for maintaining the pressure of the water supplied from the pump, and a number of nozzles arranged above the header section.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

Therefore, at the stage where the rising water flow is not generated by the rising water flow generation means, it can be classified into lightweight objects floating on the water and heavy objects sinking. Can be moved. Lightweight objects that have reached near the water surface are
The heavy object submerged in the water bottom is taken out by the heavy object taking out means. The ascending water flow gives an apparent relative specific gravity difference to the original absolute specific gravity of each object to be sorted, and can be finely sorted in several stages by changing the speed of the ascending water flow. In addition, the objects to be sequentially inputted can be continuously and efficiently sorted without causing salt damage in the next step. In addition, the rising rectification generated by the rising rectification generating unit having a simple structure in which a large number of nozzles are arranged in the upper part of the header portion is rectified by the grid-shaped or multiple-row rising rectification generating unit, and the flow velocity difference depending on the place is reduced. As a result, the sorting accuracy can be improved, and the speed of the ascending rectification can be easily controlled by the water flow control valve provided on the discharge side of the pump, so that the sorted objects having slightly different specific gravities can be selected. Furthermore, the recovery of lightweight objects can be automated by the overflow section provided near the water surface of the water tank, and the overflowing water can be returned from the separation section to the tank and circulated from there to the ascending water flow generating means by the pump again. Increase in cost can be suppressed.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

According to a second aspect of the present invention, in the sorting apparatus using the rising water flow according to the first aspect, the nozzle can be configured to have a straight outlet portion, and the rising rectification can be generated with a simple structure. Can be.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Deleted

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Deleted

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Deleted

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Deleted

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

[0021]

As is apparent from the above description, according to the sorting apparatus using the rising water flow according to the first aspect of the present invention, the sorting device is provided at the middle of the water tank and in the vertical direction of the water tank. A grid-shaped or multiple-row rising rectification generating section having a large number of spaces through which debris and particulates can fall and pass, and a pump for sucking water from a water tank through a filter and supplying water to the rising rectification generating section And a rising water flow generating means comprising a water flow control valve provided on the discharge side of the pump; and a sorted material supply means for supplying fragments or particulates of the mixed sorted material from above the rising water flow generating means. A lightweight part comprising: an overflow part provided in the vicinity of the water surface of the water tank, a separation part for catching a light object flowing from the overflow part by water, and a water recovery part for sending water from the separation part to the water tank. Object retrieval means , In what is composed of a heavy take-out means provided at the bottom of the water tank,
Since the rising rectification generating section is characterized by being constituted by a header section for maintaining the pressure of water supplied from the pump and a number of nozzles arranged on an upper portion of the header section, At the stage where the rising water flow is not generated from the rising water flow generation means, it can be classified into lightweight objects floating on the water and heavy objects sinking, and then an extremely weak rising water flow can be generated to move the objects floating in the water to the surface of the water . Lightweight objects that have reached near the water surface are
The heavy object submerged in the water bottom is taken out by the heavy object taking out means. The ascending water flow gives an apparent relative specific gravity difference to the original absolute specific gravity of each object to be sorted, and can be finely sorted in several stages by changing the speed of the ascending water flow. In addition, the objects to be sequentially inputted can be continuously and efficiently sorted without causing salt damage in the next step. In addition, the rising rectification generated by the rising rectification generating unit having a simple structure in which a large number of nozzles are arranged in the upper part of the header portion is rectified by the grid-shaped or multiple-row rising rectification generating unit, and the flow velocity difference depending on the place is reduced. As a result, the sorting accuracy can be improved, and the speed of the ascending rectification can be easily controlled by the water flow control valve provided on the discharge side of the pump, so that the sorted objects having slightly different specific gravities can be selected. Furthermore, the recovery of lightweight objects can be automated by the overflow section provided near the water surface of the water tank, and the overflowing water can be returned from the separation section to the tank and circulated from there to the ascending water flow generating means by the pump again. Increase in cost can be suppressed.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

According to the sorting device utilizing the rising water flow according to the second aspect, in the sorting device utilizing the rising water flow according to the first aspect, since the nozzle has a straight outlet portion, the nozzle is simple. Ascending rectification can be generated by the structure.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Deleted

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Deleted

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Deleted

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Deleted

[Procedure amendment 16]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Change

[Correction contents]

[Description of Signs] 1 Sorting device (sorting machine) using rising water flow 10 Water tank 19 Bottom 20 Ascending water flow generating means (device) 21 Rising rectification generating portion 22 Header portion 23 Nozzle 25 Tank 26 Filter 27 Pump 28 Water flow control valve Reference Signs List 30 sorted object supply means (device) 40 lightweight object take-out means (device) 41 overflow unit 43 separation unit 45 water recovery unit 50 heavy object take-out means (device) W mixed sorted object H heavy object L lightweight object WL water surface

Claims (6)

[Claims] 1. A water tank, a rising water flow generating means provided at an intermediate portion of the water tank in a vertical direction, and a sorted material supply for supplying fragments and granules of a mixed separated material from above the rising water flow generating means. Means, a light-weight removal means provided near the water surface of the water tank, and a heavy-weight removal means provided at the bottom of the water tank. 2. The rising water flow generating means includes: a grid-like or a plurality of rows of rising rectification generating sections each having a large number of spaces through which debris and particulates can fall and pass, and water from a tank via a filter. 2. The sorting device according to claim 1, further comprising a pump for sucking and supplying water to the upward rectification generating section, and a water flow control valve with a flow meter provided on a discharge side of the pump. 3. The sorting apparatus according to claim 1, wherein said sorting object supply means is constituted by a feeder that continuously supplies a fixed amount. 4. The light-weight removing means includes: an overflow portion provided in the vicinity of the water surface of the water tank; a separating portion for catching a light-weight material flowing from the overflow portion by water; The sorting device according to claim 1, further comprising a water recovery unit that sends water to the tank. 5. The apparatus according to claim 5, wherein said heavy-weight take-out means comprises a horizontal feed conveyor at the bottom of said water tank and a conveyor having a cylinder extending obliquely upward from the bottom of said water tank above the water surface. 2. The sorting device according to 1. 6. The rising rectification generating section includes a header section for maintaining the pressure of water supplied from the pump, and a number of nozzles arranged on the header section and having straight outlets. The sorting device according to claim 2, wherein the sorting device is used.