JPH0119951B2 - - 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 side 14 has a full width notch 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 back sides of the sorting plate 1 are inclined, and the sorting plate 1 is arranged horizontally. The sorting plate 1 has a structure in which the plate surface is a rough surface 2, and 3 is a grain, 4 is a stand,
5 and 6 are oblique rods, 7, 8, 9, and 10 are shafts, 11 is an eccentric wheel, 12 is a rod, 17 is a hopper, a is unhulled rice, b is brown rice, α is a horizontal inclination angle, A is a blank space, and 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, which 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. In addition, the sorting device separates the mixed grains into (1)...hulled rice a (2)...brown rice b (3)...mixed grains of unseparated paddy rice a and brown rice b, and the mixed grains are returned to their original state. and then re-sort the
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. Further, the sorting device separates the mixed grains into only unhulled rice and brown rice, and the mixed grains of unseparated unseparated unseparated unhulled rice and brown rice are not discharged, so the mixed grain return device as described above is not required.

However, since the motion is horizontal rotation, the sorting plate rotates back and forth and left and right, which has the drawback of increasing the size of the whole. In addition, in order to horizontally rotate it, the movement mechanism is troublesome because it has to be suspended using four wires.

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 plate surface 21 is a plate surface A provided with a left inclined protrusion 26 that guides the brown rice on the plate surface to the brown rice outlet 28 by the reciprocating motion, and a plate surface A provided with a left inclined protrusion 26 that guides the brown rice on the plate surface to the unhulled rice outlet 30 by the reciprocating motion. The board surface A is installed on the front side of the middle, the board surface B is installed on the rear side of the middle, and the front and rear width of the board surface A increases toward the right side. This is a swing type grain sorting device in which the plate surface B is made smaller in front and rear width as it goes to the right side.

(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 horizontal width 23 is longer than the front-rear 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. The front half of the sorting plate 21 is formed with a plate surface A in which a group of left-inclined protrusions 26 whose tips face leftward are formed as a whole, and the rear half of the sorting plate 21 is
A plate surface B is formed in which a group of right-slanted protrusions 27 whose tips point toward the right are formed on the entire surface.

The plate surface A is attached to the front side of the middle, and the plate surface B is attached to the rear side of the middle. Therefore, the joint 4 between plate surface A and plate surface B
2 is inclined with respect to the front wall 24 and the rear wall 25.

The left inclined protrusion 26 and the right inclined protrusion 27 are the ninth
As is clear from the cross-sectional view in the figure, both are formed in a direction that brings the grain toward the front wall 22.

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.

Comparing the sizes of the brown rice outlet 28 and the unhulled rice outlet 30, the brown rice outlet 28 is larger.

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 back direction. Pieces 38 and 38 are respectively screwed into left and right opposite screw grooves formed in the screw rod 37, and the upper end of the arm 39 is attached to the pieces 38 and 38 as a shaft. The lower end of the arm 39 is pivoted to a boss 41 provided on a vertically movable lever 40, and the lower end of the rear support lever 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, if mixed grains in which a small amount of unhulled rice a is mixed with a large amount of brown rice b (hulled rice is usually 9 parts unhulled rice to 1 part unhulled rice) are fed from the supply hopper 32 to the sorting plate 21. At first, as shown in Figure 10, unhulled rice a and brown rice b are completely mixed grains, but in this state they are subjected to horizontal shaking in the front-back direction, so as a primary phenomenon, a large amount of brown rice b with a heavy specific gravity falls to the lower layer. A small amount of unhulled rice (a) that sinks and has a light specific gravity floats to the upper layer, and only the brown rice (b) that sank to the lowest layer comes into contact with the left inclined 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 influenced by the resistance of the inclined protrusions 26 and 27, which are higher on the front wall 24 side, and gradually moves toward the sorting plate 21 as a secondary phenomenon. The particles move toward the front wall 24 of the leading edge of the screen, and are 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, and therefore, the vertically movable rod 40 is moved up and down with the support rods 34, 34 diagonally or vertically. Then, the front and rear inclination angles of the sorting plate 21 are adjusted, and the optimum distribution state of the grains can be determined.

In this way, when the brown rice b is distributed relatively thickly in the front half of the sorting plate 21 and relatively thinly in the rear half of the sorting plate 21, the surface of the brown rice b becomes a gentle mountain with a lower half in the latter half, so that the surface of the brown rice b becomes a gentle mountain that is lower in the latter half. The unhulled rice a slides on the surface of the inclined brown rice b and moves toward the rear half of the sorting plate 21 like an avalanche.

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 to the left along the front wall 24 by the action of the tip of the left inclined projection 26. Start moving. However, due to the continuous reciprocating motion, the brown rice b that is in contact with the inclined protrusions 26 and 27 of the sorting plate 21 continues to be subjected to the sorting action, so that the front wall 24
As the brown rice B layer moves to the left along It flows towards the minute.

On the other hand, the unhulled rice a slides on the upper layer of the brown rice b on the slope and is deposited on the rear half of the sorting plate 21.
In the latter half, the rice is transferred to the right side of the sorting plate 21 under the action of the right inclined projection 27 as a quaternary phenomenon, and is taken out from the unhulled rice outlet 30.

In this way, brown rice is taken out from the brown rice outlet 28, and unhulled rice is taken out from the unhulled rice outlet 30, but when viewed as a whole, the mixed grains are swirling around the sorting plate 21, and only the amount that is newly supplied is taken out. ,
Extracted metabolically. Then, the sorting plate 2
The plate surface of No. 1 is formed by a plate surface A provided with a left inclined protrusion 26 and a plate surface B provided with a right inclined protrusion 27, the plate surface A is attached to the front side of the middle, and the plate surface B is attached from the middle It is attached to the rear side, and the plate surface A has a larger longitudinal width toward the right side, and the plate surface B has a smaller longitudinal width toward the right side, so that the mixed grains can be smoothly rotated on 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 an unhulled rice outlet 30, and the sorting plate 21 is made to reciprocate approximately horizontally in the front-rear direction. It is formed by a plate surface A provided with a left inclined protrusion 26 for guiding it to the brown rice outlet 28, and a plate surface B provided with a right inclined protrusion 27 for guiding the unhulled rice on the plate surface to the unhulled rice outlet 30 by the reciprocating motion. , the plate surface A is attached to the front side of the middle, the plate surface B is attached to the rear side of the middle, the plate surface A has a front-to-back width that increases toward the right side, and the front-to-back width of the plate surface B decreases toward the right side. Since it is a swing-type grain sorting device, the device can be made small and inexpensive, and can be rotated smoothly on the plate surface, improving the sorting effect.

[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... Left wall, 16... Right wall, 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...Back wall, 26...Left inclined projection, 27...Right inclined projection, 28...Brown rice outlet,
29...Left wall, 30...Paddy rice outlet, 31...Right wall, 3
2... Supply hopper, 33... Abutment, 34... Support rod, 3
5... Eccentric wheel, 36... Rod, 37... Screw rod, 38...
Top, 39...Arm, 40...Vertical movement rod, 41...Boss, 42...Joint part.

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. The brown rice outlet 28 is cut out on the rear side of the right wall 29 to form an unhulled rice outlet 30, and the sorting plate 21 is made to reciprocate approximately horizontally in the front and back direction, and the plate surface of the sorting plate 21 A plate surface A is provided with a left inclined protrusion 26 that guides brown rice on the plate surface to the brown rice outlet 28, and a right inclined protrusion 27 that guides the unhulled rice on the plate surface to the unhulled rice outlet 30 by the reciprocating motion.
The plate surface A is attached to the front side of the middle, the plate surface B is attached to the rear side of the middle, and the front and rear width of the plate surface A increases toward the right side. is an oscillating grain sorting device with a width that is smaller toward the right. 2. The oscillating grain sorting device according to claim 1, wherein the width of the unhulled rice outlet 30 is smaller than the width of the brown rice outlet 28.