JPS6110790Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a color sorter for sorting and removing different colored grains mixed in granular materials such as grains.

This type of color sorting machine is equipped with a photoelectric detection section to detect slight changes in light intensity due to the mixture of different colored particles below the downflow gutter. Dust and bran accumulate, making it impossible to normally detect particles of different colors, so it is necessary to clean the photoelectric detection section from time to time.
However, in the conventional color sorting machine, the photoelectric detection section is fixedly installed in the machine box, so there is a drawback that it is very difficult to clean it.

In addition, it is common practice to make mechanical equipment into a unit and pull out a part of it for cleaning.
It is known as Publication No. 143235.

The purpose of the present invention is to provide a downflow gutter so that it can freely appear and retract from the photoelectric detection section below it, and to attach the photoelectric detection section to a support such as a machine frame or machine box so that it can be pulled out, and to clean the photoelectric detection section when cleaning the photoelectric detection section. It is an object of the present invention to provide a granular material color sorting machine in which the above-mentioned drawbacks are eliminated by pulling out the photoelectric detection section to the outside of the machine frame or machine box.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cutaway side view of essential parts of a grain color sorter. In the figure, 1 is a machine box, 2 is a supply hopper for grains to be sorted, 3 is an electromagnetic vibration supply gutter that supplies the grains from the hopper 2 to a downflow gutter 4 at a required ratio, and 4 is a photoelectric detection sorting box 5. 5 is a photoelectric detection sorting box constituting a photoelectric detection unit into which the lower end of the downflow gutter 4 is inserted; 6 is a movable downflow gutter installed at a required interval on the axis below the lower end of the downflow gutter 4; This is a receiving trough for normal grains. Inside the photoelectric detection and sorting box 5, there are provided a fluorescent tube 7, a light receiving tube 8, a color reference plate 9, and an air nozzle 10 for removing different colored particles. The photoelectric detection sorting box 5 has upper and lower 1 each provided on the machine box 1 which serves as a support.
Support frame 1 that can slide like a drawer along a pair of rails
It is fixed at 1.

When the grains to be sorted are put into the hopper 2 and the machine is started, the grains to be sorted are sequentially sent in appropriate amounts to the downflow gutter 4 by the operation of the electromagnetic vibration supply gutter 3, and then flow down in the flowdown gutter 4 by the action of gravity. Then, it flows down the receiving gutter 6 and is stored in a predetermined container. At this time, the grains are subjected to photoelectric detection at the point where they exit the lower end of the downflow gutter 4, and if there are different-colored grains (different-colored, different types, or grains of poor quality) in the downflow, the light receiving tube The amount of light entering 8 changes, and air is discharged from the air nozzle 10 based on the electric signal from the photoelectric element due to the change in the amount of light, and the different-colored grains are blown away to the side of their normal flow path. These uniquely colored grains blown to the side fall downward from the lower end opening 12 of the photoelectric detection sorting box 5 and are collected in a container or the like.

The grains to be sorted have bran and other dust attached to them, and it is difficult to completely remove them in advance. It is essential to clean the inside of the photoelectric detection and sorting box 5 from time to time because it becomes impossible to accurately detect different colored grains. In this case, if the flow gutter 4, which is attached to be movable up and down, is moved upward and the support frame 11 is pulled out from the machine box 1 to the front, that is, to the position indicated by the two-dot chain line, the photoelectric detector fixed to the support frame 11 Since the sorting box 5 is also pulled out of the machine box 1, the photoelectric detection sorting box 5
The inside can be easily and completely cleaned. After cleaning is completed, the support frame 11 is pushed back to its original position as indicated by the solid line, and the downflow gutter 4 is lowered to its original position, so that the sorting work can be resumed immediately.

In the above embodiment, the support frame 11 supporting the photoelectric detection sorting box 5 was provided so as to be slidable with respect to the machine box 1, but the front lower end A of the support frame 11 was attached to the machine case 1 so that it could be rotated by a hinge or the like. The photoelectric detection sorting box 5 is attached by rotating the support frame 11 forward about the hinge.
may be pulled out of the machine box 1.

FIG. 2 shows another embodiment of the present invention, in which the photoelectric detection sorting box is a photoelectric detection chamber 5 in which the photoelectric detection unit is a different color particle photoelectric detection unit having a light receiving tube 8, a fluorescent tube 7, a color reference plate 9, etc.
a and a sorting chamber 5b which serves as a support and has an air nozzle 10, and is designed such that only the photoelectric detection chamber 5a that requires cleaning can be slid and taken out of the machine box. .

As is clear from the above description, in the particulate color sorter according to the present invention, the flow gutter can be retracted from the photoelectric detection section to support the photoelectric detection section, which requires relatively frequent and thorough cleaning. It is very easy to maintain and operate because it can be easily pulled out and cleaned from the body, and by returning the photoelectric detector to its original position and protruding the flow gutter into it, the tip of the flow gutter can be brought closer to the receiver tube. , which has the effect of increasing sorting accuracy.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of the main part of a grain color sorter according to the present invention, and FIG. 2 is a sectional view of the main part of another embodiment of the same. 1... Machine box, 2... Hopper, 3... Electromagnetic vibration supply gutter, 4... Downflow gutter, 5... Photoelectric detection sorting box,
5a... Photoelectric detection chamber, 5b... Sorting room, 6... Receiving gutter, 7... Fluorescent tube, 8... Light receiving tube, 10... Air nozzle, 11... Support frame.

Claims (1)

[Scope of utility model registration request] A color sorting machine for granular materials, characterized in that a flow gutter is provided below the flow gutter so that it can freely appear and retract from a photoelectric detection section for different color particles, and the photoelectric detection section for different color particles is attached to its support so that it can be pulled out.