JPS6344974A - Disk rotation type cereal grain selector - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is designed to sort brown rice from mixed rice after hulling by rotating a doughnut-shaped disk having a number of recesses on its surface. The present invention relates to a grain sorting device.

[Conventional technology]

A rotating shaft is supported in parallel to the axis of the sorting cell in a sorting cell whose lower half is formed into a cylindrical shape, and a donut-shaped disk having many recesses formed on one or both sides is mounted on the rotating shaft. A plurality of disks are provided at appropriate intervals in the axial direction, and each of the sorting cells is provided with a supply section for a mixed rice of paddy and brown rice at one end in the axial direction, and a discharge section for paddy at the other end. A disk rotary grain sorting device comprising a brown rice receiving trough between the upper parts of each is disclosed in Japanese Patent Laid-Open No. 56-13 as a prior art.
This is proposed by Japanese Patent No. 6688.

In this disk rotating grain sorting device, the mixed rice fed into the sorting cell from the supply section at one end is held in the area between each disk to a height determined by the rotation of the disks. Afterwards, this fluidized bed of mixed rice is transferred to the discharge section while repeatedly falling and flowing.

During the transfer of this fluidized bed, the brown rice in this mixed rice fits into the recess in the disk and falls from a high position, so that the brown rice falling from a high position is received by the brown rice receiving gutter and taken out. This is what I did.

[Problem that the invention seeks to solve]

Therefore, as in the prior art, the brown rice receiving gutter disposed between the upper parts of each disk is placed on the side where the brown rice that has fallen into the recess formed on one or both sides of the disk in the radial direction falls after being raked up. In other words, the recess of the disk is disposed on the side that moves downward from the top.

On the other hand, when two adjacent disks pass through the fluidized bed at the bottom of the sorting cell, the mixed rice such as brown rice and paddy that did not fit into the recesses in each disk will move in the radial direction of one of the two disks. The mixed rice that collides with the surface and rebounds collides with the surface of the facing disk, but since the two adjacent disks are rotating upward in the same direction, the mixed rice that repeatedly collides and bounces is A phenomenon can be observed in which the particles are dragged by the rotation of the disk and reach the upper part of the disk, such that the points where they collide with the surface of the relevant disk become higher and higher.

Therefore, the paddy that has jumped to such a high position is
There was a problem in that, since the paddy was placed in the adjacent brown rice receiving trough, the paddy taken out from the brown rice receiving trough to the machine (2) would be mixed in and the sorting accuracy would deteriorate.

The present invention aims to provide 11 means for solving this problem.

[Means to solve the problem]

In order to achieve this object, the present invention provides a supply section for a mixed rice of paddy and brown rice at one end in the axial direction of a sorting cell, and a discharge section for paddy at the other end. ,
A plurality of donut-shaped disks each having a large number of recesses formed on the surface thereof are arranged at appropriate intervals so as to be supported and rotated by the rotating shaft extending in the axial direction, and each of the above-mentioned disks is arranged in the sorting cell. In a disk rotary grain sorting device, a brown rice receiving trough is provided between the upper portions of the disks on the side where the recesses in each disk move downward; A grain blocking body extending in the opposite direction to the extending direction of each of the brown rice receiving troughs is disposed on the moving side.

[Action/effect of the invention]

With this configuration, when the disks pass through the bottom side of the sorting cell, that is, the fluidized bed, the brown rice that has fit into the recesses in each disk will pass through the side of the grain blocking body. While it is lifted up to the top and allowed to fall into the brown rice catcher as the recess moves downward, the mixed rice that does not fit into the recess in each disk collides with the radial surfaces of two adjacent disks. Even though it rises while repeatedly bouncing, the mixed rice bounces off the lower surface of the grain blocking body placed between adjacent disks during the rise, and falls back onto the fluidized bed, causing the paddy to fall into the brown rice receiving trough. This has the effect of significantly reducing the rate of paddy contamination in brown rice taken out of the machine and improving sorting accuracy.

〔Example〕

The following describes the drawings of an embodiment in which the present invention is applied to a huller and sorter.The disc rotating grain sorter 1 removes the ground rice after remaining culm from a huller, which is not shown, into a wind sorter. The rice husk is sorted into rice husks and mixed rice, and the mixed rice is sorted into brown rice and paddy by a horizontally arranged disk 11 in the sorting cell 2, and the sorting cell 2 has a cylindrical lower half. ,
The sorting cell 2 has a side plate 2 at one end in the axial direction.
A supply section 4 is provided in the side plate 2b at the other end, and a discharge section 5 is provided in the side plate 2b at the other end, and a popper 6 connected to the supply section 4 is provided with a tip of the mixed rice thrower from the wind sorting section. ,
A reflux chute 7 is connected to the discharge section 5 for refluxing the paddy discharged from the discharge section 5 into the paddy supply hopper in the hulling section. Furthermore, a residual rice discharge valve 9 is provided on the bottom of the sorting cell 2 so as to be openable and closable.

Inside the sorting cell 2, a rotating shaft 10 that is rotationally driven at an appropriate speed by a motor is supported in parallel with the axis of the sorting cell 2, and a donut-shaped disk 1 is mounted on this rotating shaft 10.
1 are provided at appropriate intervals in the axial direction. Each of the disks 11 has a donut-shaped disk 11 in which a large number of recesses 12 are carved on one or both surfaces along the radial direction, the dimensions of which allow brown rice to fit therein but not paddy. A plurality of them are provided at appropriate intervals in the axial direction.

Note that each of the multiple recesses 12 in each disk 11
As shown in FIGS. 4 to 6, the disk 11 has an elliptical shape in which the circumferential length dimension is larger than the radial width dimension S, and the radial width dimension S is ,
The dimension is set to be smaller than the length dimension of brown rice and larger than the width dimension of brown rice, and is located on the front side with respect to the disk rotation direction among the left and right inner surfaces 12a, 12b in the longitudinal direction of each recess 21. The inner surface 12a is formed into an inclined surface with an appropriate angle θ (for example, about 15 degrees), and the length r from the intersection of 2 a and the bottom surface L2c to the other inner surface 12b -i is approximately equal to the length of unpolished rice, each of the above is set to an intermediate length between the length of unpolished rice and the length of paddy, and the depth T of the recess 12 is , the dimensions are set to be approximately equal to the diameter of brown rice.

In the upper part between each disk 11 and the upper part between the disk 11 and both side plates 2a and 2b of the sorting cell 2, on the side where the recess 12 in each disk 11 moves downward,
Brown rice receiving troughs 13 are inserted in an inclined manner, and the lower ends of each brown rice receiving trough 13 communicate with a brown rice winding section with a brown rice removal chute via the upper surface of a brown rice flow down plate 14.

Further, on both left and right sides of each of the brown rice receiving channels 13, rubber is installed so that only the portion where the brown rice receiving channel 13 crosses the surface of the disk 11 is close to or in contact with the surface of the disk 11 on which the recess 12 is formed. By providing the spreading plate 15 made of an elastic material such as the above, the amount of brown rice taken into the brown rice receiving trough 13 can be increased.

Furthermore, in the present invention, the upper part of each disk 11, the space between the disks 11, and the side plates 2a of the disk 11 and the sorting cell 2.

2b, on the side where the recess 12 of each disk moves upward, a grain blocking body 16 extending in a direction opposite to the direction in which the tip of the brown rice receiving trough 13 extends is arranged in an inclined manner. (see Figures 1 and 2).

Then, the upper surface side of each of the grain blocking bodies 1G is formed into an upward groove-shaped mixed rice receiving trough 16a, and each of the mixed rice receiving troughs 1
The lower end of the reflux passage 6a is connected to a reflux passage 18 with a horizontal screw conveyor 17 extending in the axial direction of the rotary shaft 10 at the side of the sorting cell 2, and one end of the reflux passage 18 is connected to the sorting cell 2 through a chute 9. It is connected to a reflux port 20 that opens at an arbitrary location in the four examples of the supply section.

In this way, during the hulling and sorting work, the husks are removed from the husks left in the hulling section by wind sorting, and the mixed rice is then fed into the sorting cell 2 from the supply section 4 by the mixed rice thrower. be done.

The mixed rice thus supplied into the sorting cell 14 is
As each disk 21 rotates, it is transported toward the discharge section 5 while flowing as if it were held up to a height as shown by the two-dot chain arrow in FIG. 1 and then dropped.

During this flow, the brown rice in the mixed rice is
The brown rice falls into the recess 12 and is lifted up to a high position and is sorted into the brown rice receiving trough 13.

The brown rice that has entered the brown rice receiving trough 13 in this way is subjected to finishing wind sorting in the brown rice sorting section, and then taken out of the machine from the brown rice take-out chute, while flowing inside the sorting cell 2 toward the discharge section 5. While moving the mixed rice, each disk 11
As the brown rice is removed so as to enter the brown rice receiving trough 13 by the rotation of the , the ratio of paddy increases as it approaches the discharge section 5, flows out from the discharge section 5 into the paddy supply hopper in the hulling section, and is recycled again. The residual culm effect is carried out.

In this case, among the paddy and brown rice that did not fit into the recesses 12 of each disk 11, those that collided with the radial surface of each disk 110 collided alternately between two adjacent disks 11.11. As a result of the fact that both disks 11.11 are rotating upward, the disk bounces up toward the upper side of both disks 11.11 as shown by arrow B in FIG. Since a grain blocking body 16 is disposed above the grain blocking body 16, the brown rice and paddy that have been thrown up are obstructed by the bottom surface of the grain blocking body 16, and are bounced back to fall back into the fluidized bed. Therefore, no paddy is mixed into the brown rice receiving trough 13.

Incidentally, among the mixed rice that does not fit into the recesses 12 of each of the disks 11, the mixed rice that has passed through the gap between the side surface of the grain blocking body 16 and each disk 11 and has been lifted up to the top is not included in the grain blocking body. The rice falls into the mixed rice receiving trough 16a on the upper surface side of the body 16, and the mixed rice flows through the reflux passage 18 with the horizontal screw conveyor 17.
from the feed section 4 in the sorting cell 2 via the chute 19.
By refluxing the water to the reflux port 20 in the example, it can be subjected to the sorting process again in the sorting cell 2, and when it is once returned to the hulling part from the discharge part 5 and then refluxed to the supply part 4 side of the sorting cell. In comparison, sorting can be done quickly and efficiently, and there is no risk of the brown rice being crushed when it is returned to the hulling section.

It goes without saying that the disk 11 of the present invention can also be applied to a case where the radial surface thereof is formed in a conical shape that intersects the axis of the rotating shaft 10 at an acute angle of 90 degrees or less.

If the conical disks 11 are formed so that the surface side on which the recesses 12 are formed faces the rotating shaft, the brown rice in the fluidized bed between the disks 11 and 11 will easily fit into the recesses 12. Therefore, by arranging the grain blocking body between adjacent disks, it is possible to further prevent paddy from entering the brown rice receiving trough.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side sectional view of a rice huller and sorter, FIG. 2 is a sectional view taken along line nn in FIG. 1, and FIG. 4 is an enlarged plan view of the main part of the disk, FIG. 5 is a sectional view taken along V-V in FIG. 4, FIG. 6 is an enlarged sectional view taken along vr-vr in FIG. 4, and FIG. The figure is an explanatory diagram of the action, Figure 8 is a sectional view of the main part seen from ■-■ in Figure 2, and Figure 9 is the
FIG. 2 is a cross-sectional view of the main part of the figure as viewed from rX-TX. 2... Sorting cell, 4... Supply section, 5... Discharge section, 10... Rotating shaft, 11... Disc, 1
2... Concavity, 13... Brown rice catcher, 15...
Scraping board, 16... Grain blocking body, 16a... Mixed rice catcher, 17... Screw conveyor, 18...
- Reflux passage, 19... chute, 20... reflux port.

Claims (1)

[Claims] (1) A feeding section for a mixture of paddy and brown rice is provided at one end in the axial direction of the sorting cell, and a paddy discharge section is provided at the other end, and the sorting cell has many recesses on its surface. A plurality of individually molded donut-shaped disks are arranged at appropriate intervals so as to be supported and rotated by the rotating shaft extending in the axial direction, and in the sorting cell, between the upper parts of the respective disks, In a disk rotary grain sorting device in which a brown rice receiving trough is provided on the side where the concavity of each disk moves downward, between the upper parts of the disks, there is a concavity of each disk disposed on the side where the concavity moves upward. A disk rotating type grain sorting device characterized in that each grain blocking body is arranged to extend in the opposite direction to the direction in which the brown rice receiving trough extends.