JPH07155690A - Selection device to select unpolished rice from waste rice - Google Patents

Abstract

PURPOSE:To enable a smooth separation of unpolished rise from waste rice using the frictional resistance of a net surface by providing a divider on a discharge side, then forming an unpolished rice delivery port on a shake-up side, a waste rise delivery port on a shake-down side and an intermediate rise delivery port on an intermediate part, and vibrating a selection net at a specific amplitude and a specified number of times. CONSTITUTION:A selection device to select unpolished rice from waste rice is composed of a wind mill 3 housed in a fixed case 1 and further. a shaking frame 12, a selection net 18, an elevator 31 and a shaking mechanism of the selection net 18. In addition, the selection net 18 is nearly square and consists of one end in a lateral direction on a feed side 19, the other end on a discharge side 20, one end in a horizontal direction on a shake-up side and other end on a shake-down side. Further, the feed side 19 is higher in elevation than the discharge side 20, and the shake-up side is higher in gradient than the shake-down side with a divider provided on the discharge side 20 and an unpolished rice delivery port 28 on the shake-up side. In addition, a waste rice delivery port is provided on the shake-down side and an intermediate rice delivery port on the intermediate part. In this way, the selection net 18 is so designed that it shakes at an amplitude of about 10mm and at a shaking frequency of about 350 to 400 times per minute.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting device for removing brown rice from scrap rice.

[0002]

2. Description of the Related Art Conventionally, brown rice obtained by a hulling device is subjected to a rotary sorting device to remove scrap rice to obtain high quality finished rice. Since some brown rice is contained in the removed scrap rice, conversely, brown rice is taken out from the scrap rice using a sorter. The sorting machine used at this time has a wind tunnel that has a wind turbine provided in a fixed case and blows the wind upward, and a swing frame provided above the wind tunnel,
A sorting net (plate) stretched over the swing frame through which the wind blows upward, an elevator that feeds scrap rice onto the sorting net, and a swing mechanism that swings the sorting net back and forth diagonally up and down. The sorting net has a substantially rectangular shape with one side in the front-rear direction being the supply side, the other side being the discharge side, one side in the left-right direction being the upper side, and the other side being the lower side. The above-mentioned structure is very similar to the rocking sorter for brown rice and paddy rice, but the brown rice paddy rice swinging sorter has a swing width of about 45 mm and a swing width of about 220 to 300 times per minute. .

[0003]

The above-mentioned known selection plate is
No research has been done on what the swing should be and how many oscillations should be made. Similar to the brown rice hulled rice oscillating sorter, even if the swing width is about 45 mm and the swing width is about 220 to 300 times per minute, there is no problem in sorting, but the idea is used because the wind is used. , If it is not converted, it will not work well. That is, if it is the same as the conventional one, the swing width is too large to completely take out the floating waste rice, and the swing width is too slow, and the swinging of the brown rice is not sufficient. In other words, since the conventional brown rice hulled rice swing sorting machine does not use wind, it does not float up with the hulled brown rice, so it can be sorted by shaking it slowly and largely, but when using wind, it shakes small and violently. It is the technology of sorting scrap rice that makes it move.

[0004]

Therefore, according to the present invention, the wind tunnel 2 having the wind turbine 3 provided in the fixed case 1 for blowing the wind upward, and the swing frame 12 provided at the upper portion of the wind tunnel 2 are provided. And a sorting net 18 stretched over the swing frame 12 through which the wind blows upward.
And a lifting mechanism 31 for supplying scrap rice onto the sorting net 18 and a swinging mechanism for reciprocally swinging the sorting net 18 in a diagonally right and left vertical direction. The sorting net 18 has one side in the front-back direction. The supply side 19 has the other side, the discharge side 20 has a substantially rectangular shape with one side in the left-right direction swinging up 21, and the other side swinging down 22, and the supply side 19 is higher than the discharge side 20 and the swinging side 21 is higher. Is inclined higher than the swaying side 22, and partitions 26 and 27 are provided on the discharging side 20 to provide a brown rice outlet 28 on the swaying side and a scrap rice outlet 30 on the swaying side and an intermediate rice outlet 29. The sorting net 18 has a swing width of about 10 mm and is about 350 minutes per minute.
This is a sorting device that removes brown rice from the scrap rice that is rocked about 400 times.

[0005]

An embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a peripheral fixed case. A wind tunnel 2 that blows upward is fixedly provided at a lower position in the fixed case 1, and a wind turbine 3 is axially mounted in the wind tunnel 2. 4 is a suction port, 5 is a blowout port, 6 is a wind turbine shaft that is substantially horizontal in the front-rear direction, and 7 is a pulley attached to the end of the wind turbine shaft 6. A drive shaft 8 parallel to the wind turbine shaft 6 is provided above the wind tunnel 2, and eccentric wheels 9 are provided on the front and rear sides of the drive shaft 8.
9 is attached, and the bases of rods 10 are axially mounted on the eccentric wheels 9. Reference numeral 11 is a pulley fixed to the end of the drive shaft 8.

A wind tunnel / rocking frame 12 is attached to the upper part of the wind tunnel 2, and shafts 13 and 13 provided on the lower part of the rocking frame 12 are
The tips of the rods 10 and 10 are axially attached. The swing frame 1
At a position above the two shafts 13 and 13, the tilt swing support rod 1 is provided.
The lower portions of 4 and 14 are pivotally attached, and the upper ends of the tilting swing support rods 14 and 14 are pivotally attached to the fixed case 1 side. 15 is a motor, 16
Is a drive pulley, the drive pulley 16 and the pulley 1
A belt 17 is wound around 1 and the pulley 7.

Therefore, when the motor 15 is energized, the wind turbine 3 rotates and the wind tunnel and swing frame 12 has a swing of about 10 mm per minute.
Swing about 350 to 400 times. The known rocking sorter for selecting brown rice and unhulled rice has a swing width of about 45 mm and a swing width of about 220 to 300 times per minute, so that the swing width is about 1/4. It is small and the frequency is about 1.8 times higher. By the way, when the brown rice hulled rice shaking sorter is shaken about 350 to 400 times per minute with a swing of about 10 mm, the brown rice and the hulled rice hardly move, and only the sorting plate shakes violently.

A sorting net 18 is stretched above the wind tunnel and swing frame 12. The sorting net 18 has a substantially square shape as shown in FIG. 4, one side in the front-rear direction is a supply side 19, the other side is a discharge side 20, one side on the left and right sides is an upper side 21, and the other side is a lower side 22. Discharge side 2
The supply side 19 side is slightly higher than 0, the swing side 21 is higher than the swing side 22, and they are inclined in both directions.

The sorting net 18 is an upper net 23 made of a woven net.
And punched perforated plate 2 in which numerous directional air holes 24 are formed
In the double-layered structure of No. 5, when the air blown up from the air outlet 5 blows through the punched perforated plate 25 and the upper net 23, the air is blown obliquely as shown in FIGS. . The direction of the wind at this time is toward the swaying side 22 and toward the discharge side 20. The upper net 23 is preferably 16 mesh (a net having 16 meshes per inch).

The air blown through the punched perforated plate 25 and the upper net 23 is slightly blown by the wind with respect to the scrap rice b supplied onto the sorting net 18, but the brown rice a is heavy. , It blows to such an extent that it does not rise so much, and since the scrap rice b slightly floats, it does not come into contact with the upper net 23 that swings in the direction of the arrow w below that much, and therefore is not subjected to a swinging force, and the slope It is guided by the wind and flows to the swaying side 22 side, and moves to the discharge side 20 side. Since the brown rice a is heavy, it is not affected by the wind, is strongly shaken in the direction of the arrow w, is swung up by the upside 21, and moves to the discharge side 20. In this case, if only one perforated plate is used as in the known example, the grain will be directly on the perforated plate, and if the air holes are formed with the air holes facing down, the air holes will be formed. Inevitably, the projections that are formed on the side of the punching face are directed toward the swaying side, which has a negative effect on the swaying action of the brown rice.
Since the upper net 23 is superposed on the upper surface 5, the projections formed to form the air holes are hidden by the upper net 23 and have no negative effect.

The discharge side 20 is provided with partition plates 26 and 27 which are adjustable in the left-right direction at intervals in the left-right direction.
6 is formed as a brown rice outlet 28, a portion between the partition plate 26 and the partition plate 27 is formed as an intermediate rice outlet 29, and a portion 22 below the partition plate 27 is formed as a scrap rice outlet 30. When the direction of the drive shaft 8 is set to the front-back direction, the rocking upper side 21 on the left and right sides
An elevator 31 is provided on the side of the elevator 31, and a vertical line / supply gutter 32 is provided below the upper discharge gutter of the elevator 31.

A vertical wire is a device for separating scrap rice by pouring a metal wire in the vertical direction with a gap of about 1.70 mm or 1.75 mm, and pouring rice on it to separate scrap rice. Has stretched piano wires with a front and rear spacing so that the spacing can be adjusted freely.However, some of the less expensive ones have punched slits in a thin iron plate, and those skilled in the art collectively refer to them as vertical lines. There is.
The scrap rice is once sorted by a vertical line, but in the present application, a vertical line with a slit width smaller than that is used for the elevator 31.
Installed in the lower part of the discharge gutter.

Since the supply gutter 32 is attached in the left-right direction and is integrally fixed to the upper part of the swing frame 12, it swings together with the swing frame 12, and therefore is of a swing type.
The tip of the supply gutter 32 is opened laterally to form a supply port 33, and the position of the supply port 33 is on the swinging side 22 as shown in FIG.

Barrier plates 34 are arranged on the upper surface of the screening net 18 at a predetermined interval. The barrier plate 34 is for spreading the grains as much as possible so as to prevent them from flowing, and is like a rail of fittings, like L-shaped steel,
You can also use something like strip steel. The barrier plate 34 is provided in a direction from the swaying side 21 to the swaying side 22, that is, in the left-right direction, and is fixed by binding with wire, fastening with a small screw, or spot welding. The length of the barrier plate 34 is not full right and left, and both ends are provided with a slight allowance 35 provided. The residual rice is swept from the interval 35. The intermediate rice outlet 29 is returned to the stake 36 of the elevator 31.

The supply gutter 32 has a triple structure of a waste rice sorting plate 37, a lower net 38 and a waste rice flow plate 39, and a clogging removal ball 40 is housed between the waste rice sorting plate 37 and the lower net 38. , And collide with the partition bar 41 having a triangular cross section to slide it. The scrap rice that has flowed through the scrap rice flow plate 39 is taken out to the take-out gutter 42.

Reference numeral 43 is a screw for adjusting the right and left inclination of the sorting net 18, and in this case, as shown in FIG. 2, the swing frame 12 is divided into upper and lower parts, and the screw 43 is attached between them. Reference numeral 44 denotes an adjusting plate of the suction port 4, one end of which is pivotally attached to the side wall of the wind tunnel 2 by a shaft 45, and the other end of which is vertically rotated to adjust the size of the suction port 4 and adjust the wind force. The wind force can be adjusted by adjusting the rotation speed of the wind turbine 3.

[0017]

[Operation] Next, the operation will be described. The brown rice that has been hulled by the hulling device is removed as the finished rice by the rotary scrap rice sorting device, and is distributed to the market as finished rice. However, in the scrap rice that was removed,
Approximately 20% of brown rice is contained, so a mechanism for selecting brown rice from scrap rice is required. The present invention selects brown rice from scrap rice. The operation will be described. When the switch is turned on, the motor 15 is energized, the pulley 7 and the pulley 11 are rotated via the belt 17 to rotate the wind turbine shaft 6 and the drive shaft 8, and the wind turbine 3 fixed to the wind turbine shaft 6 is rotated.
Is rotated to blow wind from the outlet 5, and the swing frame 12 is swung by the eccentric wheel 9 and the rod 10 provided on the drive shaft 8. Since the swing frame 12 is attached to the fixed case 1 by the tilt swing support rods 14, 14, it swings about 350 to 400 times per minute with a swing of about 10 mm in the w direction.

In this state, when the scrap rice is supplied from the inlet 36, it is lifted by the elevator 31 and flows down on the scrap rice sorting plate 37 in the supply gutter 32, and the very small scrap rice c is separated. It passes through the lower net 38, flows over the waste rice flow plate 38 below it, and is taken out to the take-out gutter 42. The brown rice a and the waste rice b are the waste rice sorting plate 3
It flows down on 7 and is supplied from the supply port 33 to the swinging side 22 of the sorting net 18 in FIG.

As shown in FIG. 3, the sorting net 18 of the embodiment is a two-layer stack of the perforated punched plate 25 and the upper net 23 having directivity, so that the blown wind is directed toward the swaying side 22 and the discharging side 20. It blows through with directivity, and the scrap rice b receives the wind and rises slightly above the upper net 23, and the brown rice a is heavy and does not rise so much even when it receives the wind. The slightly lifted waste rice b does not come into contact with the upper net 23 that vibrates violently in the direction of the arrow w therebelow, and therefore is not subjected to the rocking force of the upper net 23 and is shaken by the gradient and the wind. Side to side and move to the discharge side 20 due to the gradient and wind. The flow to the swaying side 22 at this time is adjusted by finely adjusting the gradient by the adjusting screw 43.

On the other hand, since the brown rice a is heavy, it does not rise so much even if it receives the wind, but since it receives the force of the wind, it is strongly affected by the negative swing of the arrow w, and the rocking upside 21
And is moved to the discharge side 20 side. Since this rocking is severe at about 350 to 400 times per minute, it is performed satisfactorily, and the movement to the discharge side 20 is performed on the upper surface of the sorting net 18 with the weir plate 34 arranged at a predetermined interval. As a result, the flow is blocked and the flow becomes slower. Therefore, it is widely dispersed in the left-right direction and is sorted for a long time.

Since the discharge side 20 is provided with partition plates 26, 27 which can be adjusted in the left-right direction with a space in the left-right direction, brown rice can be removed by adjusting the positions of the partition plates 26, 27. 28, middle rice at middle rice outlet 29,
The scrap rice is taken out to the scrap rice take-out port 30, respectively. The intermediate rice taken out to the intermediate rice outlet 29 is returned to the elevator 31 and circulates. The above-described work is smoothly performed by adjusting the size of the suction port 4 by adjusting the adjusting plate 44 up and down, or by adjusting the rotation speed of the wind turbine 3. Windmill 3
The number of rotations is adjusted by using a continuously variable pulley or a variable speed motor. At the end of work, the sorting net 18
A large amount of grain remains on the top, but it is swept out by utilizing the gap 35.

[0022]

EFFECTS OF THE INVENTION The above-mentioned known selection plate has not been studied as to how wide the swing is and how large the number of swings is. Similar to the brown rice hulled rice oscillating sorter, even if the swing width is about 45 mm and the swing width is about 220 to 300 times per minute, there is no problem in sorting, but the idea is used because the wind is used. , If it is not converted, it will not work well. That is, if it is the same as the conventional one, the swing width is too large to completely take out the floating waste rice, and the swing width is too slow, and the swinging of the brown rice is not sufficient. In other words, since the conventional brown rice hulled rice swing sorting machine does not use wind, it does not float up with the hulled brown rice, so it can be sorted by shaking it slowly and largely, but when using wind, it shakes small and violently. It is the technology of sorting scrap rice that makes it move. However, according to the present invention, the wind tunnel 2 having the wind turbine 3 provided in the fixed case 1 for blowing the wind upward, the swing frame 12 provided at the upper portion of the wind tunnel 2, and the swing frame 12 are stretched. The sorting net 18 through which the wind is blown upward
And a lifting mechanism 31 for supplying scrap rice onto the sorting net 18 and a swinging mechanism for reciprocally swinging the sorting net 18 in a diagonally right and left vertical direction. The sorting net 18 has one side in the front-back direction. The supply side 19 has the other side, the discharge side 20 has a substantially rectangular shape with one side in the left-right direction swinging up 21, and the other side swinging down 22, and the supply side 19 is higher than the discharge side 20 and the swinging side 21 is higher. Is inclined higher than the swaying side 22, and partitions 26 and 27 are provided on the discharging side 20 to provide a brown rice outlet 28 on the swaying side and a scrap rice outlet 30 on the swaying side and an intermediate rice outlet 29. The sorting net 18 has a swing width of about 10 mm and is about 350 minutes per minute.
Since this is a sorting device that removes unpolished rice from the scrap rice that has been rocked about 400 times, the floated scrap rice is floating, so it does not depend on the vigorous rocking, and it does not depend on the wind direction and slope. Since it moves to the swaying side 22, heavy brown rice also slightly rises,
It is rubbed up by the frictional resistance of the mesh surface of the sorting net 18 that vibrates a little and violently, and is swung up by the rocking upper side 21 to smoothly separate.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view.

FIG. 2 is a sectional view taken along line AA.

FIG. 3 is a sectional view showing the operating state of the screening net.

FIG. 4 is a bird's-eye view of the working state of the sorting network.

FIG. 5 is a vertical sectional view of a supply gutter.

FIG. 6 is a partial vertical sectional view showing an example of an adjusting mechanism.

[Explanation of symbols]

1 ... Fixed case, 2 ... Wind tunnel, 3 ... Windmill, 4 ... Suction port, 5
... Blowout port, 6 ... Wind turbine shaft, 7 ... Wind turbine shaft pulley, 8 ... Drive shaft, 9 ... Eccentric wheel, 10 ... Rod, 11 ... Drive shaft pulley, 12 ... Wind tunnel and swing frame, 13 ... Shaft, 14 ... Inclined swing support rod, 15 ... Motor, 16 ... Drive pulley, 17 ... Belt, 18 ... Sorting net, 19 ... Supply side, 20 ... Discharge side, 2
1 ... rocking side, 22 ... rocking side, 23 ... upper net, 24 ... air vent,
25 ... punched perforated plate, 26, 27 ... partition plate, 28 ... brown rice outlet, 29 ... intermediate rice outlet, 30 ... scrap rice outlet, 31 ...
Elevator, 32 ... Supply gutter, 33 ... Supply port, 34 ... Dam plate, 3
5 ... Interval, 36 ... Tightening port, 37 ... Waste rice sorting plate, 38 ... Lower net, 39 ... Waste rice flow plate, 40 ... Clogging removal ball, 41 ...
Partition bar, 42 ... Extraction gutter, 43 ... Adjusting screw, 44 ... Adjusting plate, 45 ... Shaft.

Front page continuation (72) Hiromi Takeda Inventor Hiromi Mori, Tendo City, Yamagata Prefecture 404 Oronomori, Yamagata Manufacturing Co., Ltd. Inventor Toshiaki Kobayashi 404, Oonomori, Tendo City, Yamagata Prefecture Yamamoto Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A wind tunnel 2 having a wind turbine 3 provided in a fixed case 1 for blowing wind upward, a swing frame 12 provided at an upper part of the wind tunnel 2, and a tension frame stretched on the swing frame 12. The above-mentioned sorting comprises a sorting net 18 through which the wind blows upward, an elevator 31 for supplying scrap rice onto the sorting net 18, and a swinging mechanism for reciprocally swinging the sorting net 18 in a left-right oblique up and down direction. The net 18 has a substantially rectangular shape with one side in the front-rear direction, the other side, the discharge side 20, the one side in the left-right direction on the upper side 21 and the other side on the lower side 22, and the supply side 19 is The rocking side 21 higher than the discharge side 20 is inclined higher than the rocking side 22, and partitions 26 and 27 are provided on the discharge side 20 to provide a brown rice outlet 28 on the rocking side and scrap rice collecting on the rocking side. An intermediate rice outlet 29 is formed with the outlet 30 in the middle, and the sorting net 18 has a swing of about 10 mm and is about 350 to 400 times per minute. A sorting device that removes unpolished rice from the scrap rice that has been oscillated.