JPS6219228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is a rocking grain sorting method that mainly separates mixed grains of unhulled rice and brown rice.

(Prior Art) A grain sorting device has been described in Japanese Patent Application Laid-open No. 152576/1983.

(Problems to be Solved by the Invention) Since the known example is a device that performs sorting by horizontally moving the entire sorting plate, the overall size of the device increases. Therefore, it has not yet been put into practice.

Grain sorting methods that have been implemented as commercial products are:
This is the second known example shown in Figures 1 to 3, and its structure is as follows: 1 is a sorting plate, 2 is a protrusion on the plate surface, 3 is a grain, 4 is an underframe, 5 and 6 are diagonal rods. The lower ends of the diagonal rods 5, 6 are pivoted 7, 8 on the underframe 4, and the sorting plates 1 are pivotally attached 9, 10 to the upper ends of the diagonal bars 5, 6. 11 is an eccentric wheel, 12 is a rod, 13 is a supply side, 14 is a discharge side, 15 is a swinging side, and 16 is a swinging side, and the swinging side 15 is lower than the swinging side 16 and is inclined at an α angle. A supply funnel 17 supplies the grains 3 from the corners of the supply side 13 and the shaking side 16. The discharge side 1
4 is opened over the entire width, and has an unhulled rice outlet 18 on the swinging side 15 of the discharge side 14, a brown rice outlet 19 on the swinging side 16 of the discharge side 14, and a mixed grain outlet 20 in the middle thereof. ing.

In the second known example, when mixed grains are supplied from a supply funnel 17 and the eccentric wheel 11 is rotated to tilt the sorting plate 1 up and down diagonally in the direction of arrow B, brown rice b having a heavy specific gravity sinks to the lower layer. As shown in Figure 1, the protrusion 2 of the sorting plate 1
The paddy rice a, which has a light specific gravity, floats on top of the brown rice b, and then drifts toward the shaking side 15 and flows to the unhulled rice takeout port 18. The unseparated mixed grains are distributed in the middle and taken out from the mixed grain outlet 20. The lower diagram in FIG. 2 shows the case where the sorting plate 1 is horizontal, and in this case, a blank area A is created on the swinging side 15.

The second known example explained above differs from the first known example in that it performs diagonal vertical linear movement, so unlike the first known example, the entire device does not become large, but the movement is diagonal vertical movement. As a result, complicated longitudinal vibrations are generated, which affects the sorting performance, and a mixed rice return device is required because the mixed rice that is not separated in the middle is taken out and returned to the sorting plate for re-sorting. There is a problem with this.

(Means for Solving the Problem) The invention thus devised has upright walls on the front and rear sides, and a brown rice outlet on either the left side or the right side. A group of slanted protrusions slanted in the direction of the brown rice outlet is formed on the front part of the plate surface where the unhulled rice outlet is formed, and a group of slanted protrusions slanted in the direction of the unhulled rice outlet is formed on the rear part, and this sorting board Mixed grains of unhulled rice and brown rice are fed onto the top, and the sorting plate is horizontally reciprocated in the front and rear directions,
The structure is a rocking type grain sorting method in which the mixed grains are rotated in the center of the sorting plate to be gradually sorted, and unhulled rice is guided to the unhulled rice outlet, and brown rice is guided to the brown rice outlet.

(Example) To explain the apparatus capable of carrying out the oscillating grain sorting method of the present invention using figures, in FIG.
3 is longer and has a rectangular shape when viewed from above. A rising wall 24 is formed on the front edge of the sorting plate 21 over the entire width, and similarly, on the rear edge of the sorting plate 21,
A rising wall 25 is formed over the entire width. However,
On the front plate surface of the sorting plate 21, an inclined protrusion 26 whose tip faces toward the left is formed on the entire plate surface, and on the rear plate surface of the sorting plate 21,
On the right side of the left and right sides, a group of 27 inclined protrusions facing rightward are formed over the entire board surface. The inclined protrusion 2
6 and 27, as is clear from the cross-sectional view in FIG.
It is formed in such a direction that the grains are brought together in the direction of the rising wall 24 of the leading edge.

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. An unhulled rice outlet 30 is formed in the right rear part of the sorting plate 21, and the rest is closed by the 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, and they are formed in a quick return structure. FIG. 5 is a perspective view of the rod 36, which shows that the rod 36 has a wider shape toward the top. 37 is a screw rod that adjusts the front and back inclination of the sorting plate 21, and the screw rod 37 has a piece 38,
38 are screwed together, and the arms 39, 3 are connected to the pieces 38, 38.
The upper ends of the arms 39, 39 are pivoted to bosses 41, 41 provided on a vertically movable rod 40, and the lower end of the rear support rod 34 is pivotally attached to the vertically movable rod 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 horizontally more quickly when moving from the front side to the rear side. When moving from the rear to the front, move slowly horizontally.

Therefore, when mixed grains of unhulled rice a and brown rice b are supplied to the sorting plate 21 from the supply hopper 32, the sorting plate 21
When moving from the front side to the rear side, it moves quickly, and when moving from the rear side to the front side, it moves slowly horizontally, so we want to receive the shaking, but as a primary phenomenon, brown rice b, which has a heavy specific gravity, sinks to the bottom layer. , Paddy rice a, which has a light specific gravity, floats to the upper layer of brown rice group B.

Therefore, only the brown rice b that has sunk to the lower layer comes into contact with the inclined protrusions 26 and 27. However, the inclined protrusion 2
6 and 27, since the front rising wall 24 is formed with a steep slope, the inclined protrusions 26 and 27
Under the influence of the inclined protrusions 26 and 27, the brown rice b that has come into contact with the slanted protrusions 26 and 27 gradually moves toward the rising wall 24 at the front edge, and tends to be thickly deposited on the front half of the sorting plate 21. Then, the unhulled rice a that tends to float on the surface of the brown rice b slides on the slope surface on the brown rice b and gradually moves toward the rear half of the sorting plate 21, and the brown rice b is placed on the rising wall 24 at the front edge. Paddy rice a is distributed on the rising wall 25 at the rear edge.

However, the brown rice b distributed on the rising wall 24 of the leading edge
Since the inclined protrusion 26 is inclined toward the brown rice outlet 28, the brown rice b starts to move to the left along the front rising wall 24, and the brown rice b advances to the brown rice outlet 28. The thickness increases accordingly, and the area near the brown rice outlet 28 also becomes thicker.

Therefore, part of the brown rice b flows out to the brown rice outlet 28, but the remaining part of the upper layer is not affected by the inclined protrusions 26 and 27 because it is the upper layer, and because it is thick, it is affected by the slope and shaking. On the contrary, it flows toward the rear half of the sorting plate 21 and moves toward the rising wall 25 at the rear edge.

The brown rice b moved toward the rising wall 25 at the trailing edge,
Since it has a higher specific gravity than unhulled rice a, it sneaks into the lower layer of unhulled rice a, comes into direct contact with the inclined protrusion 27, and gradually moves toward the unhulled rice outlet 30, while the rising wall 24 of the front edge
As a result, as shown in FIG. 10, the rice grains continue to swirl around the center while remaining partially mixed with the unhulled rice a.

On the other hand, unhulled rice a slides on the upper layer of brown rice b and then is transferred to the right side of the sorting plate 21, and as it advances to the right side of the sorting plate 21, its purity gradually increases until it becomes complete unhulled rice and is transferred to the unhulled rice outlet 30. taken out from

(Effects) As described above, the present invention has upstanding walls on the front and rear sides, and has a brown rice outlet on one of the left and right sides and an unhulled rice outlet on the other side. A group of slanted protrusions that are slanted toward the brown rice outlet are formed on the front part of the plate surface, and a group of slanted protrusions that are slanted toward the unhulled rice outlet are formed on the rear part of the board, and unhulled rice and brown rice are separated on this sorting plate. The mixed grains are supplied and the sorting plate is horizontally reciprocated back and forth, and the mixed grains are then rotated in the center of the sorting plate to be gradually sorted, and the unhulled rice is guided to the unhulled rice outlet and brown rice is Since this method uses a rocking type grain sorting method that guides the grains to the unloading port, it is possible to achieve good sorting without increasing the size of the device as in the first known example, and without the complicated vertical vibrations as in the second known example. It can be a grain sorting method.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the sorting plate and grains of the first known example;
FIG. 2 is a sectional view of the sorting plate of the known example, FIG. 3 is a front view of the known example, FIG. 4 is a rear view of the present invention, and FIG.
The figure is a perspective view of the crank part of the present invention, and Figure 6 is a perspective view of the crank part of the present invention.
7 is a plan view of the sorting plate of the present invention, FIGS. 8, 10, 11, and 12 are explanatory diagrams of the operation, and FIG. 9 is a cross-sectional view of the sorting plate. be. Explanation of symbols, 1... Sorting plate, 2... Protrusion, 3...
... Grain, 4 ... Underframe, 5 ... Diagonal rod, 7 ... Shaft attachment,
8... shaft attachment, 9... shaft attachment, 10... shaft attachment, 11...
... Eccentric wheel, 12 ... Rod, 13 ... Supply side, 1
4... Discharge side, 15... Shaking down side, 16... Shaking up side, 17... Supply funnel, 18... Paddy rice removal port, 1
9...Brown rice outlet, 20...Mixed grain outlet, 21
...Sorting board, 22...Front and rear width, 23...Right and left width,
24... Standing wall, 25... Standing 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... Abutment,
34... Support rod, 35... Eccentric wheel, 36... Rod, 37... Screw rod, 38... Top, 39... Arm, 40... Vertical moving rod, 41... Boss.

Claims (1)

[Claims] 1 It has upright walls on the front and rear sides,
A group of inclined protrusions slanted toward the brown rice outlet are formed on the front part of the plate surface, which has a brown rice outlet on either the left side or the right side and an unhulled rice outlet on the other side, and a group of inclined protrusions on the rear side. A group of inclined protrusions are formed that are inclined toward the unhulled rice outlet, and mixed grains of unhulled rice and brown rice are supplied onto this sorting plate, and the sorting plate is horizontally reciprocated in the front and back direction, thereby separating the mixed grains. A rocking type grain sorting method in which the sorting board is rotated in the center to gradually sort it, guiding unhulled rice to the unhulled rice outlet and guiding brown rice to the brown rice outlet.