JPH0222705B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotary sorting device for unhulled brown rice.

(Prior Art) The conventionally known German Patent No. 871382 discloses that a rotary sorting cylinder 1, which rotates on a horizontal axis, has numerous potholes formed on its inner circumferential surface, and one side in the axial direction is placed on the starting end side, and the other side is placed on the starting end side. A feeding device 4 is formed on the terminal end side of the rotary sorting tube 1 and is provided inside the rotary sorting tube 1 to convey the grain from the terminal end to the starting end. A rotary sorting device is described in which the feed device 4 is located biased toward the descending side, and a drop opening 5 that opens toward the descending side is formed in the lower part of the supply device 4.

Also, Japanese Patent Application Laid-Open No. 17876/1983
No. 117832 (Japanese Utility Model Publication No. 58-23688) has horizontally rotating rotary sorting tubes 18 and 19 with numerous potholes formed on the inner circumferential surface in upper and lower stages, and the axial direction of the rotary sorting tube 18 One of them is formed on the starting end side and the other one is formed on the terminal end side, and inside the rotary sorting cylinder 18 there is a mixed rice receiving trough 23 and a spiral conveyor for conveying the mixed rice of paddy brown rice from the terminal end side to the starting end side. 24, and the mixed rice receiving trough 23 is located at a position biased toward the rotating downward side from the center inside the rotating sorting cylinder 18,
A rotary sorting device for paddy brown rice is described in which a drop opening is formed on the lower surface of the starting end side of the mixed rice receiving trough 23.

(Problems to be Solved by the Invention) In the device described in the above-mentioned well-known German Patent No. 871382, the grain feeding device 4 is biased toward the descending side of the rotary sorting tube from the center inside the rotary sorting tube 1. The grain feeding device 4 has a certain position, the drop opening 5 on the lower surface of the grain feeding device 4 is formed toward the descending side of the rotary sorting cylinder, and the grain feeding device 4 is a mere feeding device. That's a problem. That is,
The grain feeding device 4 is located on the downward side of the rotary sorting tube 1, and its drop opening 5 is located on the lower side of the rotary sorting tube 1.
Since the opening is toward the downward rotation side of the rotary sorting cylinder 1, the liquid is supplied against the flow on the downward rotation side of the rotary sorting tube 1, so that almost no diffusion phenomenon is observed. Moreover, since the grain feeding device 4 is just a feeding device, even if the mixed rice is scooped up, it is not received by the feeding device 4.

Also, Japanese Patent Application Laid-Open No. 17876/1983
In the one described in No. 117832 (Utility Model Publication No. 58-23688), the mixed rice supply and receiving gutter 23 is the rotary sorting cylinder 1.
The brown rice receiving gutter 25 is placed on the left side of the receiving gutter 23 (Fig. 4), and the mixed rice of paddy and brown rice is placed above the brown rice receiving gutter 25. If you jump over it and move it to the brown rice catcher 23, there will always be paddy among the things that fall into the brown rice receiver 25 (in fact, there will be more), so even if it is called brown rice receiver 25, only brown rice can be taken out. do not have. Therefore, in the known example, a rotary sorting tube 19 for separating brown rice is provided below the rotary sorting tube 18, making it a twin-tube type.

Therefore, the present invention solves the above-mentioned defects (problems).

(Means for Solving the Problem) Accordingly, the present invention provides a rotary sorting cylinder 12 that rotates on a horizontal axis and has numerous potholes 11 formed in its inner circumferential surface. end side 1
4, and a mixed rice supply/circulation system for supplying and conveying mixed rice of unhulled brown rice from the terminal end side 14 to the starting end side 15 in the rotary sorting cylinder 12, and receiving the mixed rice scooped through the pot hole 11. A mixed rice conveying device 23 consisting of a receiving gutter 16 and a spiral conveyor 18 is provided,
The mixed rice conveying device 23 is provided inside the rotary sorting cylinder 12 at a position biased toward the rotation rising side A from the center, and the lower surface of the starting end side 15 of the receiving gutter 16 has a shape that becomes further away from the rotation rising side A toward the bottom. This is a rotary sorting device for paddy brown rice with a drop opening 19 formed therein.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. 1 is a hulling section, 2 is a supply hopper of the hulling section 1, 3 is a pair of hulling rolls attached to the hulling section 1, and 4 5 is a wind sorting room that wind-sorts rice husks, paddy, and brown rice, 5 is a suction blower for wind sorting room 4, 6 is the first conveyor that takes out the mixed rice of paddy and brown rice, and 7 is the second conveyor that takes out immature rice. be.

On the side of the hulling section 1, there are a grain lifting device 8 for frying the mixed rice conveyed by the first conveyor 6, and a sorting section 9 for sorting the mixed rice fried by the grain lifting device 8.
and is provided.

Inside the sorting section 9, as shown in FIG. 3, there is provided a rotary sorting cylinder 12 which rotates on a horizontal axis and has numerous potholes 11 formed on its inner surface by processing a thin metal plate 10. 1
3 is a drive roller that rotates the rotary sorting cylinder 12.

The rotary sorting cylinder 12 is formed with one axial end on the starting end side 15 and the other on the ending end side 14, sorts the mixed rice supplied to the starting end side 15, and takes out unhulled rice from the ending side 14.

The terminal end side 14 of the rotary sorting cylinder 12 is close to the supply hopper 2 (in the embodiment, the terminal end side 14 faces above the receiving tray 21 of the supply hopper 2), and the starting end side 15 is distant from the supply hopper 2. position. The reason why the terminal side 14 is provided near the supply hopper 2 is that the separated paddy is discharged from the terminal side 14 and is returned to the receiving tray 21 of the supply hopper 2 to be hulled again. The location of the starting end side 15 at a distance from the supply hopper 2 is a necessary structural result.

The rotary sorting cylinder 12 rotates on its horizontal axis, but since the paddy is taken out from the end side 14 by the rotational sorting action, the end side 14 may be installed a little lower.

The rotary sorting cylinder 12 has a mixed rice supply/circulation receiving trough 16 which has a spiral conveyor 18 for conveying the mixed rice from the terminal end 14 to the starting end 15 as shown in FIG. A circulation device 23 is provided.

The mixed rice supply and circulation receiving trough 16 of the device 23 is as follows:
The upper part is open, and the discharge gutter 22 of the grain frying device 8 is connected to the terminal end side 14, and the discharge gutter 22 of the grain frying device 8 is connected to the terminal end side 14.
At the bottom of 5, there is a starting end side 15 of the rotary sorting cylinder 12.
A dropping port 19 is formed to supply mixed rice to the container.

The receiving gutter 16 is provided so as to be biased toward the rotational upward movement side A from the center of the rotational sorting tube 12 (FIG. 2).
Therefore, from the center of the rotary sorting tube 12 to the rotating descending side B, an upwardly open brown rice receiving trough 17 and a brown rice conveyor 20 can be provided to receive the brown rice rising in advance.

As the drop opening 19 goes downward, it becomes farther away from the rotation rising side A and approaches the rotation lowering side B.

(effect) Next, we will discuss the effect.

When the unhulled rice is supplied from the supply hopper 2, it is hulled by a pair of hulling rolls 3, the rice husks are removed by suction by a suction blower 5 in the wind sorting section 4, and the mixed rice of brown rice a and unhulled rice b is conveyed to the first conveyor 6. The immature grains flow into the second conveyor 7.

The first mixed rice that has flowed into the conveyor 6 is fried by the grain frying device 8, and is supplied from the discharge gutter 22 to the mixed rice supply/circulation receiving gutter 16, where it is transversely conveyed by the spiral conveyor 18 above the receiving gutter 16. rotating sorting cylinder 12
reaches the starting end side 15, falls from the drop opening 19,
It is supplied to the starting end side 15 in the rotary sorting cylinder 12.

In this case, since the receiving gutter 16 is provided on the rotationally rising side A of the rotating sorting cylinder 12, the drop port 19 is also provided on the rotationally rising side A, and as the drop port 19 goes downward, Because of the structure that is farther from the rotating ascending side A, the mixed rice falling from the drop port 19 goes against the rotation of the rotating sorting cylinder 12.
The rice is now discharged toward the rotating downward side B, and the preceding rice scooped up in the pot hole 11 is agitated by the following rice falling from the drop opening 19. Therefore, the upper and lower layers are actively separated based on specific gravity, and the heavy and slippery brown rice a sinks to the lower layer, while the lighter and less slippery paddy b floats to the upper layer.

The preceding rice scooped into the pot hole 11 of the rotary sorting cylinder 12 (the action of the part A in FIG. 1) is mostly brown rice a as shown in FIG. are doing. The following rice, a mixture of paddy b and brown rice a, does not fit well into the pot hole 11 and floats above the pot hole 11.

In this state, when the rotary sorting cylinder 12 rotates, the mixed rice of paddy b and brown rice a floating above the pot hole 11 falls as early as the upper part of the mixed rice supply/circulation receiving trough 16, and the mixed rice is dropped into the receiving trough. 16 and circulated.

The brown rice a deeply fitted in the pot hole 11 does not fall in the receiving gutter 16, but falls beyond it into the brown rice receiving gutter 17 which is open from above, and is taken out by the brown rice conveyor 20.

Paddy rice b that is not scooped out by the pot hole 11 of the rotary sorting tube 12
is returned to the head from the end side 14 via the saucer 21.

(Effects) What is described in the well-known German Patent No. 871382 is that the grain feeding device 4 is located at a position biased toward the downward side of the rotary sorting tube from the center inside the rotary sorting tube 1, and The problem is that the drop opening 5 on the lower surface of the grain feeding device 4 is formed toward the descending side of the rotary sorting cylinder, and that the grain feeding device 4 is just a feeding device. That is,
The grain feeding device 4 is located on the downward side of the rotary sorting tube 1, and its drop opening 5 is located on the lower side of the rotary sorting tube 1.
Since the opening is toward the downward rotation side of the rotary sorting cylinder 1, the liquid is supplied against the flow on the downward rotation side of the rotary sorting tube 1, so that almost no diffusion phenomenon is observed. Moreover, since the grain feeding device 4 is just a feeding device, even if the mixed rice is scooped up, it is not received by the feeding device 4.

Also, Japanese Patent Application Laid-Open No. 17876/1983
In the one described in No. 117832 (Utility Model Publication No. 58-23688), the mixed rice supply and receiving gutter 23 is the rotary sorting cylinder 1.
The brown rice receiving gutter 25 is placed on the left side of the receiving gutter 23 (Fig. 4), and the mixed rice of paddy and brown rice is placed above the brown rice receiving gutter 25. If the rice is moved over the brown rice receiving gutter 23, there will always be paddy among the things that fall into the brown rice receiving gutter 25, so even though it is called the brown rice receiving gutter 25, only brown rice cannot be taken out. Therefore, in the known example, a rotary sorting tube 19 for separating brown rice is provided below the rotary sorting tube 18, making it a twin-tube type.

However, in the present invention, one of the rotary sorting tubes 12, which rotates on a horizontal axis and has countless potholes 11 formed on its inner circumferential surface, is formed on the starting end side 15 and the other on the terminal end side 14, and the rotating Inside the sorting tube 12, a mixed rice supply/circulation gutter 16 and a spiral conveyor 18 are used to supply and convey mixed rice of paddy and brown rice from the terminal end side 14 to the starting end side 15, and to receive the mixed rice scooped out through the pot hole 11. A mixed rice conveying device 23 is provided, and the mixed rice conveying device 23 has a
2, the lower side of the starting end side 15 of the receiving gutter 16 is provided with a drop opening 19 in a shape that becomes further away from the rotation rising side A as it goes downward. Since it is a sorting device, the receiving gutter 16 is connected to the rotary sorting cylinder 1.
2, the drop port 19 is also provided biased toward the rotation rising side A, and the drop port 19 becomes further away from the rotation rising side A as it goes downward. Therefore, when both configurations are combined, the mixed rice falling from the drop port 19 is discharged toward the rotating descending side B while opposing the rotation of the rotating sorting tube 12, and the preceding rice scooped up by the pot hole 11 is transferred to the drop port. From 19 onwards, the rice that falls after that starts to stir. Therefore, separation into upper and lower grains based on specific gravity is actively carried out, and brown rice a, which is heavy and slippery, sinks to the lower layer, and paddy b, which is lighter and less slippery, floats to the upper layer, resulting in good separation.

Further, unlike the known example, the receiving gutter 16 is provided biased toward the rotation rising side A of the rotary sorting cylinder 12, so that mixed rice can be taken out well (the receiving gutter of the known example has a rotary sorting cylinder (Since it is installed biased towards the downward rotation side, it is not possible to take out the mixed rice.)

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the whole, FIG. 2 is a partially cutaway front view of the same, and FIG. 3 is a partially enlarged view of the rotating cylinder. Explanation of symbols, 1... Husking section, 2... Supply hopper, 3... Husking roll, 4... Wind selection room, 5... Suction blower, 6... First conveyor, 7... Second conveyor , 8... Grain frying device, 9... Sorting section, 10...
... Thin metal plate, 11 ... Pot hole, 12 ... Rotating sorting tube, 13 ... Drive roller, 14 ... End side, 1
5...Starting end side, 16...Mixed rice supply and circulation gutter,
17... Brown rice catcher, 18... Conveyor, 19...
Falling port, 20...Conveyor, 21...Saucer, 22
...Discharge gutter, 23...Mixed rice transport device, a...Brown rice, b...Paddy rice.

Claims (1)

[Claims] 1. A rotary sorting tube 12 that rotates on a horizontal axis and has numerous potholes 11 formed on its inner circumferential surface is formed on one side in the axial direction on the starting end side 15 and on the other side on the terminal end side 14, and inside the rotary sorting tube 12. The mixed rice comprises a mixed rice supply/circulation receiving trough 16 and a spiral conveyor 18 for supplying and conveying the mixed rice of paddy and brown rice from the terminal end side 14 to the starting end side 15 and receiving the mixed rice scooped out by the pot hole 11. A conveyance device 23 is provided, and the mixed rice conveyance device 23 is provided inside the rotary sorting cylinder 12 at a position biased toward the rotation rising side A from the center, and
6, a rotary sorting device for paddy brown rice is formed with a drop opening 19 formed on the lower surface of the starting end side 15 in a shape that becomes further away from the rotating ascending side A toward the bottom.