JP2678561B2 - Sorting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting machine for sorting sorted objects made of solid matter such as waste by weight.

[0002]

2. Description of the Related Art Conventionally, as means for selecting solid waste such as cans and bottles, wind power is used to sort by weight, vibration is used to sort by size and weight, or magnetic force is applied to non-magnetic and magnetic materials. We select and, or combine these to perform various selections. There is also a cyclone system in which light and heavy items are collected at different exits.

[0003]

However, in the conventional technique, there is a problem that the cost is high because the equipment for generating the wind force and the magnetic force is complicated. In addition, bottles may be damaged during dropping, or they may be damaged by colliding with each other and render them unusable, or they may be mixed with other wastes and reduce recycling efficiency. was there. Others that employ the cyclone method suck the object to be sorted together with the air, so that the object to be sorted may be clogged at the suction part, causing a failure, and it is difficult to improve the sorting efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide at low cost a sorter capable of sorting objects to be sorted with high accuracy without causing clogging or damage with a simple structure.

[0005]

In order to achieve the above object, the sorting machine according to the present invention employs the following two means. The first is an inclined conveyor that is inclined at a right angle to the rotational movement direction, and an object to be sorted supply means that is provided so that an inlet for the object to be sorted is located at a predetermined position of the inclined conveyor. , Blowers that generate air curtains that provide resistance to the sliding down of the objects to be sorted on the inclined conveyor, and are provided on both sides of the outlet of the fan to prevent the objects to be scattered from being scattered by the air pressure of the air curtain. A wind suppression cover and a sorted material discharge means for discharging sorted materials sorted on the inclined conveyor.

The second means is provided with an inclining table having a variable inclination angle, and a plurality of blowers applies a wind pressure so that the air curtain laterally sends out the objects to be sorted which slide down on the inclining table. It is provided as follows.

In the first means and the second means, it is desirable that the blower for generating the air curtain is provided so that the blower direction can be changed so as to be applicable to a wide range of applications.

[0008]

In the first means, the objects to be sorted, which have been loaded at the upper end and the upstream side of the conveyed goods on the inclined conveyor being rotated, are conveyed by the inclined conveyor and at the same time slide down along the slope. Among the objects to be sorted which are sliding down, the heavy objects have a high sliding speed and are discharged downward without being blocked by the resistance of the air curtain. On the other hand, a lightweight object has a slow sliding speed, and if it hits the air curtain during sliding, it is conveyed by an inclined conveyor in a state in which the sliding is blocked by wind pressure and stopped, and for a lightweight object provided above the end part. It is discharged to the sorted material discharging means. Medium-weight materials between heavy and light materials have a medium sliding speed, so if you hit the first air curtain, the sliding speed will be slowed down, and the sliding speed will be slowed down by the next air curtain. By the time the descent is completed, the conveyance by the inclined conveyor is completed, and the medium is discharged to the medium weight discharge means provided in the lower area of the terminal end of the inclined conveyor. Further, since the wind suppressing covers are provided on both sides of the blower outlet of the blower, it is possible to prevent the objects to be sorted from scattering due to the wind pressure of the air curtain. By changing the set angle of the inclined conveyor, it is possible to change the sorting range of the sorted objects.

In the second means, the objects to be sorted are sorted by moving on different slopes depending on the weight by sliding down the slope and the wind pressure of the air curtain.

In both means, the installation angle of the blower can be made variable so that the sorting classification can be changed by making the resistance to the objects to be sorted which are sliding down different.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the first means. As shown in the figure, the main frame (not shown) is provided with the inclined conveyor 1 in a state of being inclined at an angle corresponding to the selection condition of the objects to be selected. Inclined conveyor 1
Is rotatably movable in the direction of arrow 11 by straddling the inner ends of both ends of a belt body 1a made of a flexible synthetic resin having a predetermined width, around the drive wheels 1b, 1b. The tilt angle of the tilt conveyor 1 (see FIG. 2) is variable by raising one side with a screw jack or a hydraulic jack, for example.

Above the inclined conveyor 1, there is provided a supply conveyor or the like which is a means for supplying the objects to be sorted, and the inlet 2 is provided on the upper surface of one corner of the inclined conveyor so that the objects to be sorted can be loaded. . The position to put the objects to be sorted is the highest position on the inclined surface of the inclined conveyor and the most upstream side in the conveying direction, and the objects to be dropped can be moved by both conveying and sliding.

Above the inclined conveyor 1, there are provided two blowers 3 and 4 for forming an air curtain in a horizontal strip shape with respect to the inclined surface. Each of the blowers 3 and 4 is attached to a structure (not shown) that raises and lowers the tilt conveyor 1, and can move following the change in the angle of the tilt conveyor. In addition, each of the blowers 3 and 4 can change the direction of the blown air by changing the direction of the blower opening (not shown), and an efficient sorting function can be expected according to the type of the article to be sorted.

On both sides of the blowout port of each blower, there are provided wind suppression covers 5, 6, 7 for preventing the objects to be sorted from scattering due to the wind pressure of the air curtain. Each of these wind suppression covers is made of a thin steel plate processed into a thin and shallow lid, and is attached so as to face the transport surface of the inclined conveyor 1. Of these wind suppression covers,
Wind restraint cover 5 installed at the highest position on the slope
Has a notch 5a formed by partially notching the upstream side of the slant conveyor 1 and the position facing the upstream of the slanted surface. It can be placed on top of 1.

On the lower side of the inclined conveyor 1, there is provided a heavy weight discharge means 8 for receiving the objects S to be sorted which slide down the inclined surface. The heavy-weight sorted material discharging means 8 is provided with a transporting means (not shown), and the heavy material falling from the inclined conveyor can be discharged to a predetermined discharging place.

In addition, in the lower area of the terminal end of the inclined conveyor 1, there is provided a sorted material discharging means 9 for medium weight materials,
Further, in the area above it, a sorting material discharging means 10 for lightweight materials is provided. Each of these discharging means 9 and 10 is also provided with a conveying means, so that it is possible to discharge the sorted products sent from above the inclined conveyor 1.

Next, the operation of this embodiment will be described. Install the inclined conveyor at an angle corresponding to the type of item to be sorted,
The conveyor is rotated in the direction of arrow 11. At the same time, an air curtain is created by the blowers 3 and 4. Next, the input port 2 of the selection target supply means is opened, and the selection target S is dropped onto one corner of the inclined conveyor 1.

Of the dropped objects S to be sorted, the heavy objects slide down along the slope of the inclined conveyor 1 and fall to the heavy object sorted object discharging means 8 to the heavy object collecting means (not shown) by the conveying means. Is discharged. The heavy object slightly reduces the sliding speed even with respect to the resistance due to the air curtain, and moves along a moving locus (arrow 12) in the direction in which the moving speed of the inclined conveyor and the sliding speed on the inclined surface are combined. This allows it to be sorted out from other medium-weight items and lightweight items.

On the other hand, since the medium-weight material has a relatively slow sliding speed on the inclined surface and is affected to some extent by the resistance of the air curtain, it moves in a movement locus as shown by arrow 13. Then, before reaching the lower side of the slope, it reaches the end portion of the inclined conveyor 1 and is eventually sent to the sorted material discharging means 9 for medium-weight items.

Lightweight materials such as styrene foam waste do not slide down on the inclined surface due to the resistance of the air curtain, and the movement locus 14 or a somewhat heavy object passes through the air curtain. And draws a movement locus as indicated by an arrow 14a. In this way, the lightweight material is carried to the end portion by the inclined conveyor as it is without almost sliding down the inclined surface, and the sorted material discharging means 1 for the lightweight material 1
Sent to 0. The sorted matter sent to each sorted matter discharging means is carried out to the collecting means by the conveying means (not shown) provided in each sorting means.

In the present embodiment, the objects to be sorted are classified into three types, that is, heavy, medium and light items. In this classification, the inclination angle of the inclined conveyor is changed or the objects are selected. By changing the installation area or division of the article discharging means, it is possible to divide the heavy article and the light article into an arbitrary number.

The number of blowers is also two, but this may be any number, and the desired selection can be made by devising the strength of the air curtain or changing the direction.

Next, an embodiment of the second means will be described. As shown in FIG. 3, the sorting target S is provided above the upper end and the right end of the tilting table 21 provided so that the tilt angle can be changed.
2 is provided. Two blowers 23 and 24 that form a belt-shaped air curtain are provided above the tilt table 21 in a state of being tilted so that the left side is slightly lower. The wind direction of the air curtain C can be changed arbitrarily. Each blower 23,
On both sides of 24, wind suppression covers 25, 2 for preventing the sorted objects S from scattering due to the wind pressure of the air curtain.
6, 27 are provided. On the lower side of the sloping table 21, a sorting material discharging means 8 for heavy objects is provided. Further, the lower half on the left side, which is the downstream side, is provided with a medium-weight sorted material discharging means 9, and the upper half is provided with a light weight discharging means 10.

In the present embodiment, when the objects S to be sorted are loaded from the loading port 2 onto the inclined table 21, the heavy objects are indicated by the bold double-dotted chain arrows 31 as in the case of the first means. It is slid down along the slope of the sloping platform with various movement loci, and is sent to the sorted material discharging means 8 for heavy objects. In addition, medium
It is sent to the sorted material discharging means 9 for medium-weight items while drawing a movement locus as shown by a thick two-dot chain line 32. Then, the lightweight object is sent to the sorted object discharging means 10 for the lightweight object while drawing a movement locus as shown by a thick two-dot chain line 33.

In this means, the lateral delivery of the objects to be sorted depends on the wind pressure of the air curtain, so that it is difficult to apply it to a heavy object, but it has a complicated and expensive structure. Since there is no need to install a conveyor, there is an advantage that the cost is low.

Also in the second means, the inclination angle and the number of blowers can be appropriately adopted in accordance with the case of the first means.

The present invention is applicable not only to waste but also to general selection of substances.

[0028]

Industrial Applicability According to the present invention, since the objects to be sorted are sorted on the inclined conveyor while the slope is used and the sliding of the objects to be sorted on the slope is regulated by the air curtain, bottles are selected. Highly accurate sorting is possible without damaging such items. Further, by changing the inclination angle of the inclined conveyor and changing the number, strength or direction of the air curtains, it is possible to apply to selection of all kinds of objects to be sorted. Further, since the selection is performed by using the inclined surface, large power is not required, and continuous processing is possible, and the configuration is simple, so that the selection can be performed at low cost. Further, since the wind suppressing covers are provided on both sides of the blower outlet of the blower, it is possible to prevent the objects to be sorted from scattering due to the wind pressure of the air curtain.

If a tilting stand is used instead of the tilting conveyor and the air is blown out by the wind pressure of the air curtain, the structure is simplified and the cost can be further reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment of a first means of the present invention.

FIG. 2 is an explanatory diagram of a side surface of the same.

FIG. 3 is an explanatory diagram showing a configuration of an example in a second means of the present invention.

[Explanation of symbols]

 1 Inclined Conveyor 2 Feeding Port 3 Blower 4 Blower 5 Wind Suppression Cover 6 Wind Suppression Cover 7 Wind Suppression Cover 23 Blower 24 Blower 8 Sorted Material Ejection Means 9 Selected Material Ejection Means 10 Selected Material Ejection Means 21 Inclined Stand

Claims (3)

(57) [Claims] 1. An inclined conveyor which is provided so as to be inclined in a direction perpendicular to a rotational movement direction, and an object-to-be-sorted supply means which is provided so that an inlet for the object to be sorted is located at a predetermined position of the inclined conveyor. A blower that generates an air curtain that gives resistance to the objects to be slid on the inclined conveyor, and an air curtain that is provided on both sides of the blowout port of the blower.
To prevent the objects to be sorted from scattering due to the wind pressure of
A sorter comprising: a wind suppression cover; and a sorted product discharging means for discharging a sorted product selected on the inclined conveyor. 2. An inclining table having an adjustable tilt angle, an object-to-be-sorted supplying means provided so that an inlet for the object to be selected is located at a predetermined position of the inclining table, and the inclining table is provided. A blower that generates an air curtain that applies a wind pressure so as to laterally send the sliding down selection object, and a selection object discharging unit that discharges the selection object selected on the tilt table. Sorting machine. 3. The sorting machine according to claim 1, wherein the blower is provided so that the direction of the blowable air can be changed.