JPS596973A - Selector for granular material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sorting device for sorting and removing abnormal grains contained in granular materials such as grains.

Devices that irradiate falling granular objects with light, detect the reflected light from the granular objects, and select and remove particles with abnormal color tones on the surface of the particles have already been implemented.

However, this sorting device uses a jet of air to remove abnormal grains, and employs a removal method in which the jet of air is directed at one location in a group of falling grains, thereby blowing away all of the grains present at that location. For this reason, many normal particles are included in the blown particles.

Therefore, it would be extremely uneconomical to dispose of the particles as they are, so a conventional method has been to re-sort the particles that have been removed by the blast and recover the normal particles that are mixed in. However, in the past, separate re-sorting equipment was used for this recovery,
Since the re-sorting work is carried out after the regular sorting work is completed, the work has to be done twice and is inefficient.

In view of these points, the present invention integrates the re-sorting device with the main sorting device so that the main sorting work and the re-selection work are carried out continuously and simultaneously, thereby improving the efficiency of the work and reducing the overall cost of the device. The purpose is to provide a sorting device that can make the size of the particle size smaller.The main feature is that the main sorting device and the re-sorting device are installed in parallel, and the granules removed by the main sorting device (abnormal particles and normal particles) are The mixed grain group) is automatically sent to the re-sorting device by the conveying device, and the normal grains separated from the abnormal grains by the re-sorting device are sent again to the main sorting device by the conveying device, and this feeding port is used for storage. By providing it in line with the lower end opening of the hopper, the upward conveyance distance by the conveyance device can be made as short as possible, thereby reducing the size of the conveyance device, and also making it possible to incorporate the conveyance device into the cabinet of the sorting device. The reason is that the entire device has been made smaller.

Embodiments of the sorting device of the present invention will be described below with reference to the drawings. (1) is the main sorting device, and (2) is its chute. The chute (2) is installed in an inclined manner, and the particulate matter to be sorted is caused to flow down from the upper end. This particulate material shoots (
2) are evenly distributed over the entire width of the chute (2), and are accelerated so that the distance between the particles is widened, and the - of the chute (2)
The particles fall from the edge, and a discriminating device (3) detects whether abnormal particles are included in the particles to be sorted.This discriminating device (3) discriminates the particles by optical means.

Its structure is as shown in FIG. 2, in which lamps (4) are provided on both sides of the discriminating device (P+), and light beams from these lamps (4) are irradiated onto particles passing through the discriminating position.

The granules that have been irradiated with light reflect an amount of light according to their surface color tone, and this reflected light is transmitted to the light receiving detection device (
5). Reference numeral (6) denotes a back screen, which constantly reflects the same amount of light as the light reflected from normal grains using the light from the lamp (4). Therefore, when a normal particle passes through the discrimination position (Pl), its reflected light matches the reflected light from the back screen (6), so the light receiving detection device (5) does not detect an abnormality; When the particles pass through, the reflected light is different from the reflected light from the back screen (6), so the light detection device (5) detects an abnormality. (7) is an air gun, and the light detection device (5) detects an abnormality. It is activated by a signal, and high-pressure air is injected from the nozzle end to blow away abnormal particles.

Note that a plurality of light detection devices (5) and air cans (7) are usually installed in parallel in the width direction, and each light detection device (5) is installed in each small area in which the falling particulate matter is divided in the width direction.
and an air gun (7) are in charge of the problem separately, and each sub-area is discriminated, and if a certain sub-area contains abnormal grains, only that sub-area is blown away by the blast from the air gun. (8) is a storage tank for the granular materials to be sorted, and (9) is a vibrating conveyor. The granules (5) are evenly distributed while being sent to the end and being fed by this imaging conveyor (9). 0υ is a re-sorting device, which re-sorts the granules (C1) that were sorted and removed by the main sorter (1) and collects the normal grains contained in this granule. @ is Shoe 1-10
Reference numeral 3 denotes a discriminating device, which is the same as the chute (2) of the main sorting device (1) and the discriminating device (3), except that the width is narrower because it requires a small capacity.

04) is a vibrating conhair. Therefore, the main sorting device (
Particulate matter containing many abnormal grains that were sorted and removed in 1) (
C+ is sent upward by the conveyor a~, and is supplied from the discharge DQ onto the vibrating conveyor, -H, and then the vibrating conveyor 0
4), the grains are transported to the upper end of the chute @ while being dispersed, and flow through the chute Q while accelerating, and are separated into normal grains and abnormal grains by the discrimination device 03. Since the particles p) determined as abnormal by the re-sorting device (1) contain almost no normal particles, the particles σ)) are discarded. On the other hand, the grains tEl separated as normal grains by the re-sorting device (1) are sent upward by the conveyor 00 and sent to the discharge port 0.
81 onto the vibrating conveyor (9). This discharge port side is formed adjacent to the discharge port 00 of the storage tank (8), and the vibrating conveyor (9) is supplied with granules from both discharge ports 0*α8), so that both of them are conveyed at the same time. Sent by (9).

Note that the position where the outlet 08) is adjacent to the outlet 10 is as shown in FIGS. 1 and 3.
-1. -゛,- In addition to the case, it is also possible to arrange it adjacent to the front of the discharge port 00 as shown in Fig. 4.

By arranging the discharge port 08) adjacent to the discharge port 00 on the vibrating conveyor (9) in this way, the particulate matter from the discharge port 08) is immediately sent by the vibrating conveyor (9) and onto the discharge port 08). There is no need to install a storage tank here, and the discharge port 08)
The discharge amount from the outlet GO of the storage tank (8) is automatically reduced by the amount discharged from the storage tank (8), and a constant amount of granular material is always delivered by the vibrating conveyor (9). Therefore, to the extent that a storage tank for re-sorting is not required, upward transportation by the transporter oQ can be done at a lower position, and the work can be done with a small lift, that is, a small transporter. In addition, the flow rate for sorting particulate matter can always be kept constant.

In Figure 5, a blade type conveyor is used for the conveyor a''5QQ.As a result, the inclination angle of the conveyor can be made to approximately match the inclination angle of the chute, allowing for efficient use of space and miniaturization of the entire device. can be achieved.

As described above, in the sorting device of the present invention, the storage tank (8)
The granular material to be sorted discharged from the main sorting device (1) is sent to the upper end of the no chute (2), tilts while accelerating over the shoe (2), and falls from the lower end of the chute (2). At the moment of passing through the discrimination position (1)), the normal particles (B) are optically sorted by the discrimination device (3), and the normal particles (B) pass through as they are, while the abnormal particles C) are blown away by the air gun (7). The transporter will guide you to the α position using a chute, etc.
Continuously and automatically sent upward by this conveyor 0→, supplied to the vibrating conveyor 04) of the re-sorting device Ql), sent to the chute (6), tilted down the chute σ, and discriminated. The abnormal grains (
Those selected as D) are discarded as is, and on the other hand,
The particles separated as normal particles (El are sent upward by the conveyor α6, supplied to the vibrating conveyor (9), and then sorted by the main sorting device (1). In this way, in the present invention, abnormal particles are separated by the main sorting. Since the grains that have been removed as grains are re-sorted and the normal grains contained therein are recovered, very economical and efficient sorting is possible, and because this is done continuously. , the work efficiency is extremely high.Furthermore, in order to return the re-sorted granules (E) to the main sorting device,
Since the discharge port a (6) is provided adjacent to the discharge port QO of the storage tank (8), the lifting height of the carrier QQ can be lowered compared to when the discharge port is returned to the upper part of the storage tank (8). IQ
A small device is sufficient for this purpose, and the device can be made smaller by that amount, and the sorting device and the conveyor can be integrated into one device. When implementing this, the number of re-elections shall be set to two or more times.”
For example, a re-selection device may be provided adjacent to the re-selection device.

[Brief explanation of the drawing]

The drawings show an embodiment of the sorting device of the present invention; FIG. 1 is a front view showing the arrangement relationship, FIG. 2 is a side view showing an overview of the mechanism of the main sorting device, and FIG. 3 is a bottom view of the discharge port part. 4 is a bottom view of the discharge port portion of another embodiment, and FIG. 5 is a side view showing an outline of the conveyor. (1) Main sorting device, (2)... Shoot, (3
)... Discrimination device, (4)... Lamp, (5)...
Light reception detection device, (6)...Back screen, (7)
...Air gun, (8)...Storage tank, (9),,
, vibration conveyor, CIO...discharge port, (1η...
Re-sorting device, (l odor...shi, x -y, α■...discrimination device, H...shaking 1r conveyor, aa atp...conveyor, (171...discharge port, 08)... ··Vent.

Claims (1)

[Claims] 1. A main sorting device that sorts the granules supplied from the storage tank, a device that re-sorts the granules that have been sorted and removed by the main sorter, and a device that re-sorts the sorted granules. and a device for transporting granular materials to a sorting device, in which each of the devices is integrated and operated continuously. 2. The granular material sorting device according to claim 1, wherein the main sorting device and the re-sorting device are sorting devices using optical means. 3. Storage tank outlet (Ic) K I! The particulate matter sorting device according to claim 1, wherein a particulate matter discharge port C181 for re-sorting is arranged in contact with J. 4. The granular material sorting device according to claim 1, wherein the conveying device is a blade conveyor.