JPS643509Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention consists of a cylinder body with a number of depressions large enough to fit grains in its inner circumferential surface, which is rotatably installed horizontally. The grains to be sorted are gradually flow-transferred from the supply side at one end to the discharge side at the other end, and the sorted grains scooped up by the depression are taken out by a receiving gutter installed in the cylinder. This invention relates to a sorting auxiliary device for a rotary sorting machine.

(b) Conventional technology Conventionally, a cylinder with many depressions formed on its inner circumferential surface, one end serving as a supply side for grains to be sorted, and the other end serving as a discharge side, is rotatably installed horizontally. In the case of a rotary sorter equipped with a receiving gutter inside the cylinder to take out the sorted grains scooped up by a recess, the cylinder rotates in a substantially horizontal position, and the grains to be sorted are placed on one end of the rotary sorter. Immediately after this supply, grains to be sorted accumulate and become bulky, and after that they gradually spread toward the discharge side, while mainly foreign grains float to the upper layer and sink to the lower layer. It is scooped up by the scooping action of the depression and collected in the receiving gutter.

Further, the grains to be sorted inside the cylinder form a fluidized bed exhibiting a bulge state on one side in the direction of rotation, and as they move toward the discharge side, a scooping action is performed by the depressions.

Therefore, if foreign particles are present in the hollow and immediately above the scooped particles, they will come into contact with the hollow and be lifted up, and fall into the receiving gutter, reducing the purity of the sorting. This is also a contributing factor.

As a rotary sorting machine having such a factor of reducing the sorting purity, a structure disclosed in Japanese Patent Application Laid-Open No. 55-20677 has been disclosed.
In this disclosed rotary sorting machine, a rotary conveyor is installed so as to act on the upper surface of the fluidized bed in the middle part of the fluidized bed formed in the bulge state in this cylinder, and the flow of the upper surface of this fluidized bed is carried out. This is a technical configuration that aims to promote this and even out the grains to be sorted on the side opposite to the direction of rotation of the cylinder, thereby having a favorable effect on sorting.

Therefore, with this disclosed technical structure, it is still not possible to solve the above-mentioned factor of decreasing screening purity.

(c) Problems to be solved by the invention In this way, in the case of a rotary sorter, the grains to be sorted in the cylinder form a fluidized bed with a bulge state biased toward the direction of rotation, and are mainly composed of different kinds of grains. Since the scooping action by the hollow occurs while the particles float to the upper layer and move to the discharge side, if there is a foreign particle directly above the hollow that is to be scooped up, the foreign particle will not reach the hollow. They are lifted up by objects and fall into the receiving gutter, reducing sorting accuracy.

Therefore, the present invention was proposed with the aim of eliminating the factors that reduce the selection accuracy with a simple configuration.

(d) Means for solving the problem Therefore, the present invention has been developed by installing a cylindrical body rotatably horizontally, which has a number of depressions large enough to fit grains in its circumferential surface, and In a rotary sorting machine, the rotary sorting machine is equipped with a receiving gutter for taking out the sorted particles scooped up by a recess in the cylinder, with the other end being the supply side for the grains to be sorted and the other end being the discharge side. This aims to achieve the above objectives.

That is, the grains to be sorted are supplied into the cylinder, build up to form a fluidized bed, and then move to the discharge side. A scraping body for scraping off objects lifted up and about to fall into the receiving gutter is provided closest to the inner circumferential surface of the cylindrical body.

(e) Effect According to this configuration, the grains to be sorted that are supplied into the cylinder spread toward the discharge side, and the foreign grains among the grains to be sorted mainly float to the upper layer and pile up unevenly in the direction of rotation. While forming a fluidized bed and transferring to the discharge side, it is sorted by the scooping action of the depressions, and in this case, the material at the bottom of the fluidized bed is scooped up into the depressions. The material that is directly above the material that has been planted in this depression (including foreign particles) comes into contact with the material that has been planted in the depression and is lifted up, and when it comes to the end of the fluidized bed, it is lifted up by the scraping body. As a result, the material that is about to be lifted is scraped off and separated from the material that was collected in the depression, and only the material that was collected in the depression is scooped up and falls into the receiving gutter, and foreign particles are mixed into the receiving gutter. Sorting with good sorting purity can be carried out without any separation.

(f) Examples The present invention will be explained below with reference to the drawings of examples.

In the explanation in the text, the grain to be sorted is a mixture of brown rice and paddy.

Namely, 1 is a cylindrical body with a large number of depressions a into which brown rice and paddy can be inserted, and is supported in a substantially horizontal position by rollers 2 and 3 rotated by an appropriate drive device. One end side is the supply side X of mixed grains, and the other end side is the discharge side Y. Reference numeral 4 denotes a receiving gutter, which is installed in the cylinder 1 over the entire length of the cylinder 1, and is a screw conveyor 5 for taking out the brown rice that is scooped up in the recess a by the rotation of the cylinder 1. is built-in.
Reference numerals 6 and 7 denote a receiving side plate and a receiving collecting plate that constitute the receiving gutter 4, and each extends obliquely upward. Reference numeral 8 denotes an adjustment plate whose lower edge is pivoted at the upper end of the side plate 6 so as to be connected to the upper part of the receiving side plate 6, so that the inclination position can be changed. It is an adjustment lever to change. 10 is a mixed grain tank, 11 is a brown rice removal gutter, and 12 is a paddy removal gutter.

Reference numeral 13 denotes the end of the fluidized bed of mixed grains that is unevenly piled up on the inner peripheral surface of the cylinder 1 in the direction of rotation thereof, that is, the lower position of the adjustment plate 8 closest to the inner peripheral surface. It is a scraping body provided with a cylindrical body 1, which rotates in a direction opposite to the rotating direction of the cylindrical body 1 from the supply side X to the discharge side Y, and has vanes 14 equally distributed around it .

In this way, since the scraping body 13 is provided closest to the inner circumferential surface of the cylinder 1 at the end of the fluidized bed on the rotating direction side, the rolling wheels 2 and 3 are now driven by an appropriate drive device. When rotated, the cylinder 1 rotates in the direction shown by arrow A in FIG. At the same time, the screw conveyor 5 also rotates and the adjustment lever 9 is operated to set the adjustment plate 8 in an appropriate tilted position so that the mixed grains sequentially introduced into the mixed grain tank 10 are continuously fed to the inner periphery of the supply side X of the cylindrical body 1. Immediately after the inflow, the mixed grains accumulate and become bulky, but after that, they gradually spread out and mainly the brown rice sinks to the bottom layer of the paddy (the paddy floats to the top) and does not fill the depression a. It is scooped up and falls over the adjustment plate 8 onto the receiving side plate 6 or the receiving collecting plate 7, and falls into the receiving gutter 4, as shown by the arrow B in FIG.

Then, the rice that cannot be scooped moves up and down along the inner peripheral surface of the cylinder 1 toward the discharge side Y, and gradually the scooping action of the depression a progresses, and most of the brown rice is scooped out. The layer of mixed grains becomes thinner as they are raised, and the paddy and a small amount of brown rice are removed from the discharge side Y of cylinder 1.
The unhulled rice is taken out of the machine from the end via the paddy removal gutter 12, and the brown rice that has fallen into the receiving gutter 4 is taken out from the brown rice removal gutter 11 to a suitable location outside the machine.

Therefore, to further explain the scooping action by the above-mentioned depression a, the mixed grains are supplied to the inner peripheral surface of the cylinder 1 as described above, and due to the bulk due to accumulation, they spread to the discharge side Y and sink to the lower layer of brown rice. As a result, the mixed grains on the inner circumferential surface of the cylinder 1 are scooped up by the depression a, but at this time, the mixed grains on the inner circumferential surface of the cylinder 1 are shifted toward the direction of rotation, forming a fluidized bed C exhibiting a raised state as shown by C in FIG. Form.

Therefore, the brown rice B that has settled in the depression a in the lowest layer of the fluidized bed C is scooped up, and at this time, the paddy P or brown rice B that is immediately above the brown rice B comes into contact with the brown rice B that has settled in the depression a. As the brown rice B is lifted up, it is blocked by the scraping body 13 and scraped downward by the blade plate 14, so that only the brown rice B that has settled in the depression a is scooped up and dropped into the receiving gutter 4.

Note that the scraping body 13 is not limited to one that rotates, but may be one that is fixed or swinging.In short, the scraping body 13 is placed directly above the object to be scooped up in the depression a, and is about to be lifted up. Any means may be used as long as it scrapes the object downward.

In addition, although it is easy to understand that the recesses a are individually independent in the embodiment, it also includes a shape in which independent recesses are continuously formed into a groove.

(g) Effects of the invention As explained above, the present invention consists of a cylindrical body with a number of depressions large enough to fit grains in its inner peripheral surface, which is rotatably installed horizontally, and one end of the cylinder is horizontally installed. In a rotary sorter equipped with a feed side for the grains to be sorted and a discharge side at the other end, the cylinder is equipped with a receiving gutter for taking out the sorted grains scooped up by a recess in the cylinder. At the end of the fluidized bed on the rotating direction side of the grains to be sorted, which form a fluidized bed and move toward the discharge side, the grains contact the concavity and are lifted up and try to fall into the receiving gutter. Since the scraping body for scraping off particles is installed closest to the inner circumferential surface of the cylinder, the grains to be sorted that are fed into the cylinder spread from the supply side to the discharge side, and the grains to be sorted spread out from the supply side to the discharge side. The different types of grains mainly float to the upper layer and form a fluidized bed while stacking up on one side in the direction of rotation. While this fluidized bed is formed and transferred to the discharge side, the material at the bottom of this fluidized bed is scooped up into the depression. At this time, the material directly above the material in the depression comes into contact with the material in the depression and is lifted up, but when it reaches the end of the fluidized bed, it is lifted up by the scraper. The material to be collected is scraped off and separated from the material that has been collected in the depression, and only the material that has been collected in the depression is scooped up and dropped into the receiving gutter, which prevents foreign particles from entering the receiving gutter and increases the purity of sorting. was completed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is an overall side view showing the inside thereof, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is an explanatory view of the operation. a...Indentation, 1...Cylinder, X...Supply side, Y
...Discharge side, 4...Gutter, c...Fluidized bed, 13...
...Scraped body.

Claims (1)

[Scope of utility model registration request] A cylindrical body 1 having a large number of depressions a large enough to fit grains in its inner peripheral surface is rotatably installed horizontally, and one end is a supply side X for grains to be sorted, and the other end is a discharge side. In a rotary sorter equipped with a side Y and a receiving trough 4 for taking out sorted grains scooped up by a recess a in the cylinder 1, the fluidized bed C is fed into the cylinder 1 and rises as it rises. At the end of the fluidized bed (c) on the rotating direction side of the grains to be sorted that are formed and transferred to the discharge side, there is a recess (a) in which grains are lifted up by contact with the particles and are about to fall into the receiving trough 4. Scraping body 13 that scrapes off
A sorting auxiliary device for a rotary sorting machine, characterized in that the sorting auxiliary device is arranged closest to the inner circumferential surface of a cylindrical body 1.