JPS5943230B2 - Beans sorting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sorting device for spherical legumes such as soybeans, and particularly relates to an improvement in a mechanism for feeding out legumes to be sorted.

After threshing the soybeans harvested from the field, a sorting device is used to separate the sized grains (complete grains) from damaged grains such as crushed grains, insect-damaged grains, and degenerated grains. For example, an endless sorting belt that tilts in a predetermined direction and moves upward in a hopper that stores soybeans (legumes) to be sorted and has a feeding mechanism at the bottom that feeds out the beans intermittently. A device equipped with this is proposed, for example, in Japanese Patent Application Laid-Open No. 54-163472.

This sorting device utilizes this rolling characteristic because the soybean particles are spherical and have rolling characteristics, and the particles are rolled toward the lower end of the sorting belt, and the particles are rolled toward the lower end of the sorting belt. Damaged grains such as crushed grains and insect-damaged grains are conveyed to the upper end of the slope without rolling on the sorting belt and discharged from the upper end of the slope for sorting.

However, when the beans to be sorted are continuously fed onto the sorting belt from the feeding mechanism, high sorting accuracy cannot be obtained because damaged grains are washed away due to the rolling of the sorting grains, or the damaged grains prevent the rolling of the sorting grains. Therefore, this problem was solved by intermittently delivering the sorting belt over the entire width. but,
The beans to be sorted that are fed out from the feeding mechanism do not necessarily move linearly in the direction of inclination on the sorting belt, but also have the property of being spread diagonally from the position where they fall. There was a drawback that the sorting performance deteriorated.

Accordingly, the present invention provides a structure in which the feeding mechanism is configured to intermittently change the feeding width in the width direction with respect to the sorting belt, so that collisions of the beans to be sorted on the sorting belt are reduced and the beans are sorted. This reduces the possibility of the damaged grains being washed away by the grains or the damage grains preventing the rolling of the grain size.
Therefore, the present invention provides a pulse sorting device that has extremely high sorting accuracy. Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a hopper for storing soybeans to be sorted. At the bottom of this hopper 1, a feeding roll 2 shown in FIG. There is.

The feeding roll 2 has two feeding grooves on the circumferential surface of the cylindrical roll divided into left and right from approximately the middle part in the lengthwise direction, each with a phase of 180 degrees and with the left and right ones shifted by 90 degrees. 3a is formed.

Below this feeding roll 2, a pair of front and rear rolls 4,
5, and has a width almost equal to the length of the feed roll 2, and the roll 2 is wound so that the roll 4 side is high and the roll 5 side is low.
The sorting belt 6 is stretched in a dimensionally inclined manner. The sorting belt 6 is made of a member with a large coefficient of friction, such as a rubber belt, and is rotated upward as shown by the arrow by rotating the roll 4 in the direction of the arrow. The soybeans to be sorted are set so that the sized grains will roll down and the damaged grains will not slide off, and is equipped with an angle adjustment mechanism (not shown) so that the angle can be adjusted. In the soybean sorting device having such a configuration, the soybeans A to be sorted stored in the hopper 1 are passed through the feed groove 3 of the feed roll 2 rotating in the direction of the arrow.
The right and left ones are stored in the container a and are fed out by a predetermined amount alternately and intermittently.

Then, the fourth
As shown in the figure, the sorting belt 6
The soybeans A to be sorted released above are spread on the belt 6 from the right side gradually to the left side as shown in A, and when released from the left side, they are spread towards the right side as shown in the mouth. Sorting belt 6 by reducing collisions between soybeans A to be sorted
is diffused to the sorting surface. The sorted soybeans A (complete grains) released across the width of the sorting belt 6 in this way immediately roll toward the downward slope of the belt 6,
In addition, damaged grains such as crushed grains and insect-damaged grains are conveyed upward on the slope by the belt 6, which moves without rolling, and are separated. Therefore, the soybeans A to be sorted that have already been fed out by the feeding roll 2 and the soybeans A to be sorted that are to be fed out next are not consecutively discharged onto the same sorting belt 6 surface.
With the lower part of the feed roll 2 as the boundary, sorted grains are distributed on the sorting belt 6 on the lower side of the slope, and damaged grains are distributed on the sorting belt 6 on the upper side of the slope, and the sorted grains fall from the roll 5 side and are stored. In addition, damaged grains fall from the roll 4 side and are collected,
The selection accuracy is extremely high. Further, the feeding mechanism is not limited to the rotary feeding roll 2, but may be a mechanism that electrically opens and closes intermittently, such as an electromagnetic valve, or another intermittent feeding mechanism.

Furthermore, the sorting apparatus of the present invention can be applied to a sorting belt having a three-dimensionally inclined sorting belt, and can be used not only for beans but also for other agricultural products that are sorted using rolling characteristics. As explained above, according to the pulse sorting device of the present invention, the feeding mechanism that feeds the beans to be sorted onto the endless sorting belt inclined in a predetermined direction is configured to intermittently change the feeding width in the width direction with respect to the sorting belt. Therefore, the beans to be sorted released from the feeding mechanism onto the sorting belt are also spread diagonally, reducing collisions between the beans to be sorted, and immediately separating them into sorted grains and damaged grains and moving. The grains to be sorted are not mixed with the moving sorted or damaged grains, so the sorting accuracy is extremely high, the sorting efficiency is further improved, and the structure is simple, small, and can be produced and provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of essential parts showing an embodiment of the present invention, Fig. 2 is a perspective view of a feeding roll, and Fig. 3 A.
It is an explanatory view of the action of a feeding roll. 1...Hotsupa, 2...Feeding roll,
3a... Feeding groove, 4, 5... Roll, 6... Sorting belt.

Claims (1)

[Claims] 1. A pulse sorting device that houses beans to be sorted and has an endless sorting belt that tilts in a predetermined direction and moves upwards below a hopper that has a feeding mechanism at the bottom that feeds out the beans intermittently. A pulse sorting device, wherein the feeding mechanism is configured to intermittently change the feeding width in the width direction with respect to the sorting belt.