JPH029871B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention mainly relates to a swing type grain sorting device that separates mixed grains of unhulled rice and brown rice into unhulled rice and brown rice, respectively. It is designed to be automatically controlled.

(Prior Art) When the rice is hulled with a hulling device, mixed grains of unhulled rice and hulled brown rice are discharged, and it is necessary to separate them. Various types of separation and sorting apparatuses have already been provided for use in this case, but since the present invention is completely different from conventional ones, it will be explained in detail.

As is well known, the separating and sorting equipment for unhulled rice and brown rice is
There are sieves that are simply sieves, oscillating grain sorters, and rotary barrel graders.

In either structure, the intermediate rice is taken out, and the intermediate rice is returned to the sorting section and separated again by some method.

That is, the mixed grains supplied to the sorting device are separated into three types by the sorting device: (1)...paddy rice (2)...brown rice (3)...unseparated paddy rice, brown rice, and intermediate rice. The unhulled rice in (1) is returned to the hulling device for re-hulling, the brown rice in (2) is taken out as finished rice and is usually polished, and the intermediate rice in (3) is supplied to the sorting device. It is returned to the laboratory and subjected to the cyclical sorting action again.

However, the present invention relates to a sorting device that does not allow the intermediate rice to come out of the sorting plate, and as a result, countless various effects can be expected.

(Problems to be Solved by the Invention) The reason why intermediate rice is always produced when separating unhulled rice and brown rice using conventional sorting equipment is as follows.

Figures 1 to 3 show typical known examples that are most widely used at present. 1 is a sorting plate, and the surface of the sorting plate 1 has countless protrusions 2 formed on a rough surface. has been done. The sorting plate 1 is moved diagonally back and forth up and down in the direction of arrow B, and the grains 3 are moved in the direction of arrow A by means of two groups of projections.

The sorting plate 1 is mounted on the underframe 4.
5 and 6 are diagonal rods, the lower ends of the diagonal rods 5 and 6 are pivoted 7 and 8 on the underframe 4, and the sorting plate 1 is attached to the upper ends of the diagonal rods 5 and 6 with pivots 9 and 10. do. 11 is an eccentric wheel, and 12 is a rod.

The sorting plate 1 has a rectangular shape when viewed from above, one side is a supply side 13, and the other side opposite to the supply side 13 is a discharge side 1.
4. The supply side 13 is formed higher than the discharge side 14 and is inclined. In addition, the supply side 13 and the discharge side 1
In the lateral direction with respect to the direction in which 4 are connected, one side is a swinging down side 15 and the other side is a swinging up side 16, and the swinging down side 15 is tilted at an α angle lower than the swinging up side 16. When the sorting plate 1 is horizontal, the second
As shown in the figure, a blank portion A is formed on the swinging side 15.
However, if the angle of α is tilted as described above, the blank portion A will not occur. A supply funnel 17 supplies the grains 3 from the corners of the supply side 13 and the shaking side 16. The discharge side 14 is opened over the entire width, and an unhulled rice outlet 1 is provided on the swinging side 15 of the discharge side 14.
8, a brown rice outlet 19 is provided on the shaking side 16 of the discharge side 14, and a middle rice outlet 20 is provided in the middle thereof.

In this known example, intermediate rice is fed onto the sorting plate 1 from a supply funnel 17, and the eccentric wheel 11 is rotated to swing the sorting plate 1 in the direction of arrow B. The intermediate rice on the sorting plate 1 is shaken. Therefore, as a primary sorting phenomenon, brown rice b, which has a heavy specific gravity, sinks to the lower layer, and unhulled rice a
The brown rice b in the lower layer floats to the upper layer, and the brown rice b in the lower layer is on the shaking upper side 16
As a secondary phenomenon, the brown rice is taken out to the brown rice outlet 19 along the trajectory E1 in Figure 3. Paddy rice a, which has a light specific gravity, slides on brown rice b and drifts to the shaking side 15 like E2, and is taken out to the paddy rice take-out port 18, and in the middle, middle rice that is not separated like E3 is distributed. The rice is taken out to the rice takeout port 20.

As described above, in the known example, unseparated intermediate rice is distributed like E3 and taken out to the intermediate rice take-out port 20, and therefore, an intermediate rice returning device is always required.

(Means for Solving the Problems) Therefore, the present invention forms an upright front upper wall 24 and a rear upright upper wall 25 on the front and rear edges of the sorting plate 1, which has a rectangular shape when viewed from above. , an upright left upper wall 29 is formed in the rear part of the left edge of the sorting plate 1, and a brown rice outlet 28 is formed in the front part;
The front part of the right edge of the sorting plate 1 is formed with an upright right wall 31 and the rear part thereof is formed with an unhulled rice outlet 30.
A brown rice inclined protrusion 26 which is inclined in the direction of the brown rice outlet 28 is provided on the front side of the whole, and a hulled rice inclined protrusion 27 which is inclined in the direction of the unhulled rice outlet 30 is provided on the rear side of the sorting plate 1. The sorting plate 1 is provided with an inclination angle adjusting device in the front and back direction, and the sorting plate 1 is
A brown rice blank sensor 49 is provided on the left side near the rear upright wall 25 of the plate surface, and an unhulled rice detection sensor 50 is provided at a position near the unhulled rice outlet 30 near the rear upright wall 25. A swing type grain sorting device in which the unhulled rice detection sensor 50 and the inclination angle adjustment device are connected so as to adjust the inclination angle of the sorting plate 1 so that there is no brown rice in the brown rice blank sensor 49 section and unhulled rice is in the unhulled rice detection sensor 50 section. This is an automatic control device.

(Example) The oscillating grain sorting device of the present invention will be explained with reference to the drawings. In Figures 4 and after, 21 is the sorting plate of the present invention, which is usually formed in a multi-stage state, and the sorting plate of the embodiment. 21, as shown in FIG. 8, the left and right width 23 is longer than the front and rear width 22, and the shape when viewed from above is a rectangular shape that is long on the left and right sides. At the front edge of the sorting plate 21, a front upright wall 24 is formed over the entire width, and similarly, at the rear edge of the sorting plate 21, a rear upright wall 25 is formed over the entire width. Therefore, on the 2/3 plate surface of the sorting plate 21, a group of brown rice inclined protrusions 26 whose tips are directed toward the left if it is on the left or right side are formed over the entire plate surface, and the rear side of the sorting plate 21 is On the 1/3 board surface, 27 groups of slanted paddy protrusions are formed over the entire board surface, with the right side facing rightward. As is clear from the cross-sectional view of FIG. 9, the brown rice inclined protrusion 26 and the unhulled rice inclined protrusion 27 are both formed in a direction to draw the grain toward the front upper wall 24 of the leading edge.

There is a brown rice outlet 2 in the left front part of the sorting plate 21.
8 is formed, and the rest is closed off by a left standing upper wall 29. A paddy/rice outlet 30 is formed in the right rear portion of the sorting plate 21, and the rest is closed by a right rising 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 lower end of the front support rod 34a is pivoted 47 to the front side of the support 33. Abutment 33
An adjustment rotating shaft 37 is rotatably mounted on the rear side of the housing. Opposite screw grooves 42a and 42b are formed on the left and right sides of the adjustment rotation shaft 37, respectively.
8a and 38b are screwed together. A vertically movable rod 42 is provided below the adjustment rotation shaft 37 so as to be vertically movable.
The bosses 41a and 41b are fitted to the vertically movable rod 42 so as to rotate freely, and the arm 39b is attached between the piece 38a and the boss 41a, and between the arm 39a and the piece 38b and the boss 41b, respectively. Further, the lower end of the rear support rod 34b is pivotally attached to the vertical movement rod 40, and the mounting base 4 is attached to the upper ends of the front support rod 34a and the rear support rod 34b.
5 is mounted on the shaft.

Thus, the sorting plate 21 is pivotally attached to the upper surface of the left side of the mounting base 45 via the shaft attachment part 43, and a block 44 is fixed to the right end of the mounting base 45, and an adjustment screw 46 perpendicular to the frame 44 is fixed to the right end of the mounting base 45. are screwed together, and the upper end of the adjusting screw 46 is engaged with the lower end of the sorting plate 21.

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. FIG. 5 is a perspective view of the rod 36, and according to this,
The rod 36 has a shape that becomes wider toward the top.

A forward/reverse motor 48 is attached to the rear end of the adjustment rotation shaft 37, and the rear upper wall 21 of the sorting plate 21
5, a brown rice blank sensor 49 is installed near the left standing upper wall 29, an unhulled rice detection sensor 51 is installed near the unhulled rice outlet 30, and an unhulled rice sensor 51 is installed near the unhulled rice outlet 30.
The unhulled rice blank sensor 51 is installed inside the right standing upper wall 31 on the front side, and the brown rice outlet 28 is installed inside the front standing upper wall 24.
A brown rice detection sensor 51 is provided near the , and these are connected to the forward/reverse rotation motor 48 .

(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 from the front side to the rear side at a ratio of 1:1.01 to 1.2. When moving, move quickly; when moving from the back to the front, move slowly.

Therefore, when the intermediate rice of unhulled rice a and brown rice b is fed from the supply hopper 32 to the sorting plate 21, the unhulled rice a and brown rice b are in a state of intermediate rice at first as shown in FIG. As the brown rice b, which has a heavy specific gravity, is subjected to horizontal or inclined shaking in the direction, the primary phenomenon is that the brown rice b, which has a heavy specific gravity, sinks to the lower layer, and the 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 that has sunk to the lowest layer. contacts the brown rice inclined protrusion 26 and the unhulled rice inclined protrusion 27, which are higher on the front side.

In this way, the brown rice b in the lowest layer that has come into contact with the inclined brown rice protrusions 26 and the unhulled rice inclined protrusions 27 is influenced by the slowly moving inclined protrusions 26 and 27, and as a secondary phenomenon, gradually moves to the front edge of the sorting plate 21. It moves toward the front upper wall 24 and is deposited relatively thickly on two-thirds of the sorting plate 21. Contrary to this, the rear half of the 1/3 of the sorting plate 21 becomes relatively thin. In this way, the brown rice b is deposited relatively thickly on 2/3 of the sorting plate 21, and becomes relatively thin on 1/3 of the sorting plate 21.
When it returns, it returns relatively quickly, and since the inclined protrusions 26 and 27 are lowered in the advancing direction, they act to leave the grain as it is, so that the surface of 2/3 of the brown rice b on the sorting plate 21 The unhulled rice a that surfaced in
The sorting plate 21 slides on the surface of the slanted brown rice b.
Move towards 1/3 of

As a tertiary phenomenon, when the above operation is repeated, the brown rice b that has accumulated thickly on the front half of the sorting plate 21 is moved along the front front upper wall 24 due to the action of the tip of the brown rice inclined protrusion 26. Start moving to the left. At this time as well, the brown rice b in contact with the inclined protrusions 26 and 27 on the plate surface of the sorting plate 21 continues to be subjected to the above-mentioned sorting action while moving to the left, so as it moves along the front upper wall 24, Gradually, the layer of brown rice B increases in thickness, so that part of the upper layer of brown rice B begins to flow toward the rear half of the sorting plate 21, and when brown rice B reaches the left end of the sorting plate 21, The purity of the rice is further improved, and only complete brown rice b is taken out to the brown rice outlet 28. In this case, the movement of the brown rice b in the direction of the brown rice outlet 28 is primarily carried out by the tip of the brown rice inclined protrusion 26, but the brown rice inclined protrusion 26 has a much larger area than the unhulled rice 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;
In the second half of 1, as a quaternary phenomenon, a sloped protrusion 2 of unhulled rice appears.
7 and is transferred to the right side of the sorting plate 21. However, due to the action of the hulled rice sloping protrusion 27, the unhulled rice a is advanced to the right side of the sorting plate 21, and the secondary phenomenon is still being sorted, so the unhulled rice a gradually increases in purity 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.

The above tertiary phenomenon, that is, the brown rice outlet 28 of brown rice b
The movement in the direction and the quaternary phenomenon, that is, the movement of the unhulled rice with respect to the unhulled rice outlet 30, are performed by adjusting the left and right inclinations of the sorting plate 21. That is, by rotating the adjusting screw 46, the horizontal inclination of the sorting plate 21 is adjusted, and depending on the degree of adjustment, the tertiary phenomenon and the quaternary phenomenon can be finely adjusted.

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

In the above sorting state, the forward/reverse motor 4
8 and brown rice blank sensor 49 to brown rice detection sensor 5
1 each sensor automatically adjusts. That is, in the case of the present invention, the distribution of grains on the sorting plate 21 has one tendency: (a) The brown rice blank sensor 49 part is blank (b) The unhulled rice detection sensor 51 part has unhulled rice a (c) The unhulled rice blank sensor 51 part is blank Part is blank 2 The part of the brown rice detection sensor 51 exhibits its best performance only when the condition that there is brown rice b is met. Therefore, a brown rice blank sensor 49, an unhulled rice sensor 51, an unhulled rice blank sensor 51, and a brown rice detector 52 are provided at each part, thereby rotating the forward/reverse motor 48 and moving the arms 39a and 39b from the tilted state to the upright state. When adjusted, the vertically movable rod 40 moves up and down, the mounting base 45 is adjusted back and forth, and the sorting plate 21 attached to the mounting base 45
The inclination angle of the front and back is adjusted. Therefore, when the brown rice blank sensor 49 detects that there is grain, since the rear side is low, the forward and reverse rotation motor 48 rotates it slightly forward, and when the unhulled rice sensor 51 no longer detects that there is unhulled rice, the rear side is low. Since it is high, the adjustment rotating shaft 37 is reversed by the forward/reverse motor 48 to lower the rear side.

That is, a. If there is grain in the brown rice blank sensor 49 area, raise the rear part.

(b) If there is no unhulled rice a at the unhulled rice detection sensor 51, lower the rear part.

C. If there is grain in the paddy/rice blank sensor 51 area, raise the rear part.

D. If there is no brown rice b at the brown rice detection sensor 52, raise the rear part.

In the above embodiment, four sensors, ie, the brown rice blank sensor 49 to the brown rice detection sensor 52, are provided on the sorting plate 21, but the process can also be carried out using only the brown rice blank sensor 49 and the unhulled rice detection sensor 51.

(Effects) The present invention provides an upright upper wall 2 on the front and rear edges of the sorting plate 1, which has a rectangular shape when viewed from above.
4 and a rear standing upper wall 25 are formed, and a standing left standing upper wall 29 is formed in the rear part of the left edge of the sorting plate 1, and a brown rice outlet 28 is formed in the front part of the sorting plate 1. The front part of the right side edge is formed with an upright right wall 31, and the rear part is formed with an unhulled rice outlet 30, and the front side of the entire sorting plate 1 has brown rice that is inclined in the direction of the brown rice outlet 28. A slanted protrusion 26 is provided, and a slanted rice slanted protrusion 27 is provided on the rear side of the sorting plate 1, which is inclined in the direction of the unhulled rice outlet 30, and a device for adjusting the inclination angle in the front and rear direction is attached to the sorting plate 1. , a brown rice blank sensor 49 is installed on the left side of the plate surface of the sorting plate 1 near the rear upper wall 25, and a unhulled rice outlet 30 is installed near the rear upper wall 25.
A paddy rice detection sensor 50 is provided in the vicinity of the brown rice blank sensor 49 and the paddy rice detection sensor 50.
and an inclination angle adjustment device are connected to each other so as to adjust the inclination angle of the sorting plate 1 so that there is no brown rice in the brown rice blank sensor 49 section and unhulled rice is in the unhulled rice detection sensor 50 section. A. The structure is simpler because it can be sorted without producing intermediate rice.

B. Sorting can be done automatically in the best condition.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a known sorting plate and grains;
The figure is a sectional view of the sorting plate of the known example, FIG. 3 is a front view of the known example, and FIGS. 4 and 6 are rear views of the present invention.
5 is a left side view of FIG. 4, FIG. 7 is a perspective view of the crank part of the present invention, FIG. 8 is a plan view of the sorting plate of the present invention, FIGS. 9, 11, 12, Fig. 13 is an explanatory diagram of the action, Fig. 10 is a sectional view of the sorting plate, and Fig. 1
4 and 15 are plan views with the sensor attached. Explanation of symbols, 1... Sorting plate, 2... Protrusion, 3...
... Grain, 4 ... Underframe, 5 ... Diagonal rod, 6 ... Diagonal rod,
7... shaft attachment, 8... shaft attachment, 9... shaft attachment, 10...
Shaft mounting, 11... Eccentric wheel, 12... Rod, 13...
...Supply side, 14...Discharge side, 15...Swinging side, 1
6... Shaking side, 17... Supply funnel, 18... Unhulled rice outlet, 19... Brown rice outlet, 20... Intermediate rice outlet, 21... Sorting plate, 22... Front and rear width, 23...
...Left and right width, 24...Front standing upper wall, 25...Rear standing upper wall, 26...Brown rice inclined projection, 27...Unhulled rice inclined projection, 28...Brown rice outlet, 29...Left standing upper wall, 3
0... Paddy rice outlet, 31... Right standing wall, 32...
Supply hopper, 33... Abutment, 34a, 34b...
...branch, 35...eccentric wheel, 36...rod, 37
...Adjustment rotation axis, 38a, 38b... Top, 39
a, 39b...Arm, 40...Vertical movement rod, 41
a, 41b...boss, 42a, 42b...screw groove, 43...shaft attachment part, 44...piece, 45...mounting base, 46...adjustment screw rod, 47...shaft attachment, 48...
...Forward/reverse motor, 49...Brown rice blank sensor,
50...Paddy rice detection sensor, 51...Paddy rice blank sensor, 52...Brown rice detection sensor.

Claims (1)

[Claims] 1. The sorting plate 1, which has a rectangular shape when viewed from above, has an upright front upper wall 24 and a rear upright upper wall 25 on the front and rear edges, respectively, and the left side edge of the sorting plate 1 A standing left upper wall 29 is formed on the rear side, a brown rice outlet 28 is formed on the front side, and a right standing upper wall 31 is formed on the front side of the right edge of the sorting plate 1 on the rear side. The part forms the unhulled rice outlet 30, the front side of the entire sorting plate 1 is provided with a brown rice inclined protrusion 26 that is inclined in the direction of the brown rice outlet 28, and the rear side of the sorting plate 1 is provided with an unhulled rice outlet 30. Paddy rice inclined projection 2 inclined in the direction of the exit 30
A brown rice blank sensor 49 is installed on the left side near the rear upper wall 25 of the plate surface of the sorting plate 1.
A paddy rice detection sensor 50 is provided near the paddy rice take-out port 30 near the rear upper wall 25, and the brown rice blank sensor 49, the paddy rice detection sensor 50, and the inclination angle adjustment device are connected to the brown rice blank sensor 49. This automatic control device is used in a swing-type grain sorting device connected to adjust the inclination angle of a sorting plate 1 so that there is unhulled rice at a portion of the unhulled rice detection sensor 50. 2 In claim 1, the front upper wall 2
4, an automatic control device for an oscillating grain sorting device is provided with a brown rice detection sensor 52 at a position near the brown rice outlet 28.