JPH0119950B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention mainly relates to a rocking type grain sorting device that separates mixed grains of unhulled rice and brown rice into unhulled rice and brown rice, respectively.

(Prior art) Conventionally, as a swing-type grain sorting device that separates mixed grains of hulled rice and brown rice into hulled rice and brown rice, an inclined swing-type sorting device (see Fig. 3, Japanese Patent Laid-Open No.
50-45369)) and a horizontal rotation type sorting device (see Japanese Patent Application Laid-open No. 152576/1983).

The structure described above is the structure shown in FIGS. 1 to 3, in which a front wall 13, a left wall 15, and a right wall 16 are provided around the sorting plate 1, which has a rectangular shape when viewed from above. The entire width of the side 14 is cut out to form a brown rice outlet 19, a paddy rice outlet 18, and a mixed grain outlet 20, respectively, and both the left and right sides and the front and rear sides of the sorting plate 1 are inclined, so that the sorting plate 1 is arranged horizontally. The sorting plate 1 is designed to reciprocate at an incline, and the plate surface of the sorting plate 1 is a rough surface 2, where 3 is grain, 4 is a stand, 5,
6 is a diagonal rod, 7, 8, 9, 10 is a shaft, 11 is an eccentric wheel, 12 is a rod, 17 is a hopper, a is unhulled rice,
b is brown rice, α is the horizontal inclination angle, A is the blank area, A is the moving direction of the grain, and B is the reciprocating direction of the sorting plate 1.

In the above structure, a front wall, a rear wall, a left wall, and a right wall are provided around a sorting plate that is rectangular in shape when viewed from above, and the front side of the left wall of the sorting plate is cut out, and the brown rice outlet is placed on the rear side of the right wall. are cut out to form paddy and rice extraction ports, the left and right sides and the front and back sides of the sorting plate are made substantially horizontal, the sorting plate moves in a horizontal circle, and the plate surface of the sorting plate is a rocking type with a rough surface. This is a grain sorting device.

(Problems to be Solved by the Invention) The above-mentioned sorting device has a defect in that since the reciprocating motion B is an inclined reciprocating motion, vertical vibrations occur during each reciprocating motion. Further, the sorting device separates the mixed grains into mixed grains of (1)...hulled rice a (2)...brown rice b (3)...unseparated unhulled rice a and brown rice b, and the mixed grains are returned to their original state. and then re-sort,
There is a defect that requires a return device for mixed grains.

In this respect, since the aforementioned sorting device moves horizontally, no vertical vibration occurs. Furthermore, the sorting device separates the mixed grains into only unhulled rice and brown rice, and the unseparated mixed grains of unseparated unseparated unhulled rice and brown rice are not discharged, so there is no need for the above-mentioned device for returning the mixed grains.

However, since the movement is horizontal and the sorting plate rotates, there is a drawback that the overall size becomes large. Also,
In order to horizontally rotate it, it has to be suspended using four wires, which makes the movement mechanism complicated.

However, like the sorting device mentioned above, a sorting device that separates mixed grains into only paddy rice and brown rice, and does not discharge the mixed grains of unseparated paddy rice and brown rice,
It is possible to perform horizontal reciprocating motion instead of horizontal rotation. Therefore, the device can be made smaller and provided at a lower cost.

(Means for Solving the Problem) Therefore, the present invention provides a front wall 24, a rear wall 25, a left wall 29, and a right wall 31 around the sorting plate 21, which has a rectangular shape when viewed from above. A brown rice outlet 28 is formed by cutting out the front side of the left wall 29, and an unhulled rice outlet 30 is formed by cutting out the rear side of the right wall 29. The sorting plate 21 is made to be slightly inclined and can be freely adjusted in inclination, and the sorting plate 21 is made to reciprocate in the front and back direction, and the reciprocating movement causes the brown rice on the plate surface to be transferred to the brown rice outlet 28. This is a swing type grain sorting device which is provided with a left inclined projection 26 for guiding and a right inclined projection 27 for guiding the unhulled rice on the plate surface to the unhulled rice outlet 30 by the reciprocating movement.

(Example) Figure 4 and subsequent figures are examples of the present invention, and Figures 7 and 8 are examples of the present invention.
In the figure, an oblong rectangular sorting plate 21 in an overhead view shape is shown in which the left and right width 23 is longer than the front and back width 22.

A front wall 24 is provided on the front edge of the sorting plate 21 over the entire width, and a rear wall 25 is formed on the rear edge of the sorting plate 21 over the entire width. On the front half of the sorting plate 21, a group of left-slanted protrusions 26 whose tips point toward the left are formed over the entire plate surface, and on the rear half of the sorting plate 21, there are formed a group of left-slanted protrusions 26 whose tips point toward the left. A group of 27 right-facing protrusions are formed on the entire board surface. As is clear from the cross-sectional view of FIG. 9, the left inclined projection 26 and the right inclined projection 27 are both formed in a direction to draw the grain toward the front wall 24.

There is a brown rice outlet 2 in the left front part of the sorting plate 21.
8 and the rest are closed off by the left wall 29. A paddy/rice outlet 30 is formed in the right rear part of the sorting plate 21, and the rest is closed by a right wall 31.

32 is a supply hopper, which is provided on the front side of the side where the unhulled rice outlet 30 is provided. The sorting plate 21 is the support base 3
It is pivoted to the upper ends of support rods 34, 34 that are pivoted to 3. 35 is an eccentric wheel, and 36 is a rod, but the angle between the rod 36 and the support rod 34 is smaller than a right angle. Fifth
The figure is a perspective view of the rod 36, and it shows that the rod 36 has a wider shape toward the top.

Reference numeral 37 denotes a screw rod for adjusting the inclination angle of the sorting plate 21 in the front and rear direction. The upper end is pivoted, the lower end of the arm 39 is pivoted to a boss 41 provided on a vertically movable rod 40, and the lower end of the rear support rod 34 is pivoted to the vertically movable lever 40.

(effect) Next, we will discuss the effect.

In the present invention, with the above configuration, when the eccentric wheel 35 is rotated, the angle between the rod 36 and the support rod 34 is smaller than a right angle, so the sorting plate 21 moves faster when moving from the front side to the rear side, When moving toward the front than the side, move slower.

Therefore, when the mixed grains of unhulled rice a and brown rice b are fed from the supply hopper 32 to the sorting plate 21, the unhulled rice a and brown rice b are initially in a completely mixed grain state as shown in FIG. As the brown rice b, which has a heavy specific gravity, is subjected to horizontal shaking in the direction, the primary phenomenon is that brown rice b, which has a heavy specific gravity, sinks to the lower layer, and unhulled rice a, which has a lighter specific gravity, floats to the upper layer of the brown rice group b, and only the brown rice b, which has sunk to the lowest layer, tilts to the left. It contacts the protrusion 26 and the right inclined protrusion 27 .

In this way, the lowest layer of brown rice b that has come into contact with the left inclined protrusion 26 and the right inclined protrusion 27 is
6 and 27, it gradually moves toward the front wall 24 at the front edge of the sorting plate 21 as a secondary phenomenon, and is deposited relatively thickly on the front half of the sorting plate 21. On the contrary, the rear half of the sorting plate 21 is deposited relatively thinly. In this case, the grain is moved forward and backward by rotating the screw rod 37. That is, when the screw rod 37 is rotated, the pieces 38, 38 move toward or away from each other due to the action of the opposite screw grooves 42, 42. Therefore, the vertically movable rod 40 is moved up and down with the support rods 34, 34 diagonally or vertically. make it move. Then, the front and rear inclination angles of the sorting plate 21 are adjusted,
The optimal distribution state of grains can be determined. In this way, when the brown rice b accumulates relatively thickly on the front half of the sorting plate 21 and becomes relatively thin on the rear half of the sorting plate 21, the unhulled rice a floats on the surface of the brown rice b on the front half of the sorting plate 21. slides on the surface of the slanted brown rice b and moves toward the rear half of the sorting plate 21. As a tertiary phenomenon, when the above operation is repeated, the brown rice b that is thickly deposited on the front half of the sorting plate 21 is removed by the action of the tip of the left inclined projection 26.
Start moving to the left along the front wall 24 on the front side.
At this time as well, the inclined protrusions 26 and 2 on the plate surface of the sorting plate 21
The brown rice b in contact with the front wall 2 continues to be subjected to the sorting action described above while moving to the left side.
4, the layer of brown rice b gradually increases in thickness, and as a result, a part of the upper layer of brown rice b begins to flow toward the rear half of the sorting plate 21, and the brown rice b is separated from the sorting plate 21. When it reaches the left end, the purity is further improved and only complete brown rice b is taken out to the brown rice outlet 28. In this case, the movement of brown rice b toward the brown rice outlet 28 is primarily carried out by the tip of the left inclined protrusion 26, but the left inclined protrusion 26 has a much larger area than the right inclined protrusion 27. Therefore, be sure to transport brown rice b.

On the other hand, unhulled rice a slides on the upper layer of brown rice b on the slope and accumulates on the rear half of the sorting plate 21, but on the rear half of the sorting plate 21, as a quaternary phenomenon, the right inclined protrusion 2
7 and is transferred to the right side of the sorting plate 21.

However, due to the action of the right inclined protrusion 27, it is advanced to the right side of the sorting plate 21, and the secondary phenomenon is still being sorted, so the purity of the unhulled rice a gradually increases as it advances toward the unhulled rice outlet 30. Finally, the unhulled rice becomes complete and is taken out from the unhulled rice outlet 30.

During this time, the mixed grains are accumulated in the center of the sorting plate 21 and swirl around, and the newly supplied brown rice b and unhulled rice a are only metabolized and never leave the sorting plate 21.

(Effects) As mentioned above, conventionally, as a oscillating grain sorting device that separates mixed grains of unhulled rice and brown rice into hulled rice and brown rice, there is a tilted oscillating sorting device (see Fig. 3, JP-A No. Akira
There are two methods: a horizontal rotation type sorting device (see Japanese Patent Application Laid-open No. 152576/1983).

However, since the reciprocating motion B of this sorting device is inclined and reciprocating, it has the defect that vertical vibration occurs each time it reciprocates, and mixed grains of unhulled rice A and brown rice B are discharged, so a device for returning the mixed grains is not required. There are flaws that require it.

In this respect, since the above-mentioned sorting device moves horizontally, no vertical vibration occurs and the mixed grains are not discharged, so there is no need for a device for returning the mixed grains. However, since the movement is horizontal and the sorting plate rotates, there is a drawback that the overall size becomes large. In addition, in order to horizontally rotate it, the movement mechanism is troublesome because it has to be suspended using four wires.

However, in the present invention, the front wall 24, the rear wall 25, and the left wall 2 are arranged around the sorting plate 21, which has a rectangular shape when viewed from above.
9 and a right wall 31 are provided, and the front side of the left wall 29 of the sorting plate 21 is cut out to form a brown rice outlet 28 on the right wall 29.
The rear side is cut out to form a paddy/rice outlet 30, the left and right sides of the sorting plate 21 are approximately horizontal, the front and rear sides of the sorting plate 21 are slightly inclined and the inclination can be adjusted freely, and the sorting plate 21 is The sorting plate 21 is configured to reciprocate in the front-back direction, and the plate surface of the sorting plate 21 is provided with a left inclined protrusion 26 that guides the unpolished rice on the plate surface to the unpolished rice outlet 28 by the reciprocating movement; Since it is a swing type grain sorting device equipped with a right-slanted protrusion 27 for guiding the unhulled rice to the unhulled rice outlet 30, it is similar to the one described in the above-mentioned Japanese Patent Application Laid-Open No. 152576-1976, although it is a horizontal reciprocating motion. In addition, since it is a sorting device that separates the mixed grains into only paddy rice and brown rice, and does not discharge the unseparated mixed grains of paddy rice and brown rice, the device can be made smaller and can be provided at a lower price.

[Brief explanation of drawings]

Figures 1 to 3 are explanatory diagrams of the tilt-swing type sorting device described in Japanese Patent Application Laid-open No. 50-45369, Figure 4 is a rear view of the present invention, and Figure 5 is a perspective view of the crank portion of the present invention. Fig. 6 is a left side view of Fig. 4, Fig. 7 is a plan view of the sorting plate of the present invention, Fig. 8, Fig. 10, Fig. 11.
12 are explanatory diagrams of the operation, and FIG. 9 is a sectional view of the sorting plate. Explanation of symbols: 1... Sorting plate, 2... Protrusion, 3... Grain, 4... Underframe, 5... Diagonal rod, 6... Diagonal rod, 7... Pivoting,
8... Pivoting, 9... Pivoting, 10... Pivoting, 11... Eccentric wheel, 12... Rod, 13... Supply side, 14... Discharge side, 15... Swinging down side, 16... Swinging side, 17... Supply funnel, 18...Unhulled rice outlet, 19...Brown rice outlet, 20
...Mixed grain outlet, 21...Sorting plate, 22...Front and rear width,
23...Left and right width, 24...Front wall, 25...Rear wall, 26...
Left inclined projection, 27... Right inclined projection, 28... Brown rice outlet, 29... Left wall, 30... Paddy rice outlet, 31... Right wall, 32... Supply hopper, 33... Support stand, 34... Support rod, 35... Eccentricity Ring, 36...rod, 37...screw rod,
38... Top, 39... Arm, 40... Vertical movement rod, 4
1...Boss, 42...Screw groove.

Claims (1)

[Claims] 1. A front wall 24, a rear wall 25, a left wall 29, and a right wall 31 are provided around the sorting plate 21, which has a rectangular shape when viewed from above, and the front side of the left wall 29 of the sorting plate 21 is cut out to open the brown rice outlet 28 to the right. The rear side of the wall 29 is cut out to form a paddy/rice outlet 30, the left and right sides of the sorting plate 21 are substantially horizontal, the front and rear sides of the sorting plate 21 are slightly inclined, and the inclination can be adjusted freely. 21 is configured to reciprocate in the front-rear direction, and the plate surface of the sorting plate 21 is provided with a left-slanted protrusion 2 that guides brown rice on the plate surface to the brown rice outlet 28 by the reciprocating movement.
6, an oscillating grain sorting device provided with a right inclined protrusion 27 that guides the unhulled rice on the plate surface to the unhulled rice outlet 30 by the reciprocating motion;