JPH10128137A - Method for automatic control in shelling-selecting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform shelling with good selection by a method wherein after shelling is started, observing grains of rice made to flow on a selection plate, control is performed in such a way that when width of brown rice is large, a gap between rolls for shelling is widened by a motor for controlling the gap between rolls and when width of shelling is large, the gap between the rolls for shelling is narrowed. SOLUTION: In a process for shelling, a feeding shutter 78 of a feeding hopper 30 is opened, and shelling is performed by means of rolls 33 and 34 for shelling and in this time, for performing visually manual fine control, observing grains of rice made to flow on a selection plate, control is performed in such a way that when shelling is strong, a gap between the rolls 33 and 34 for shelling is widened by a motor 63 for controlling the gap between the rolls and when shelling is weak, the gap between the rolls 33 and 34 for shelling is narrowed. Thereafter, when a switch for automatic control for the gap between rolls is pushed, a standard electric current value of a motor 74 for the rolls for shelling at the early stage of shelling work is measured and then, an operating electric current value of a motor 74 for the rolls for shelling during the operation is measured, and based on the result of comparison thereof, the gap between the rolls 33 and 34 is controlled by controlling normal and reverse rotation of the motor 63 for controlling the gap between rolls.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic control method in a hulling sorter.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Publication No. 63-15026 discloses a method in which paddy rice put into a supply hopper is hulled by a pair of hulling rolls. It describes a device that is moved toward and performs initialization. In addition, a well-known method disclosed in
Japanese Patent Application Publication No. 14742 discloses an apparatus which automatically adjusts the roll gap based on the desquamation rate and the current value. Moreover, the hulling sorter of FIG. 1 is also known. In FIG. 1, A is a hulling wind selecting unit, B is a swing sorting unit, and the hulling wind selecting unit A has a pair of left and right rubber rolls axle mounted on the upper part and wind-selects hulling below the rubber rolls a. The wind selection part b is formed. The swing sorting section B is provided with a sorting device d in which sorting plates c are stacked in multiple stages of about 5 to 6 stages,
A bucket elevator e is provided behind the hulling wind selection unit A to fry the mixed rice, a storage tank f is provided at an outlet of the bucket elevator e, and a swing sorting plate c of each stage is provided through a distribution device g. Ensure even distribution. A supply hopper h is provided above the hulling wind selection unit A, and when rice is supplied to the supply hopper h, the rice is hulled by a rubber roll a and the air selection unit b
The rice hulls selected in the above are blown by a blower i, and the crushed rice is lifted by a bucket elevator e, flows into a storage tank f, and is supplied from a distributor g to a separator d. In the sorting device d, the rice is separated into paddy rice, mixed rice, and brown rice by rocking, the brown rice is taken out as a finished rice by the finished rice thrower j, and the mixed rice is returned to the bucket elevator e to be re-sorted. Is returned to the supply hopper h and hulled again.

[0003]

The above-mentioned well-known Japanese Patent Publication No. Sho 63
In the automatic control of the hulling device described in JP-A-15026, the hulling is performed at predetermined roll intervals from time to time. Further, the known method described in Japanese Patent Application Laid-Open No. 58-114742 has a problem in that a difference in loss rate due to a difference in product quality cannot be detected by a current value. Therefore, in the present application, manual adjustment is once performed visually according to the state of the paddy rice, and then automatic adjustment is performed.

[0004]

OBJECTS OF THE INVENTION Complete, automatic control.

[0005]

Accordingly, the present invention provides a method for crushing paddy rice put into a supply hopper with a pair of crushing rolls,
The paddy rice is sucked and discharged by the paddy discharge blower, and the mixed rice of the brown rice selected in the wind is separated into the paddy rice, the brown rice and the mixed rice by the rocking sorter, and the paddy rice is returned to the supply hopper and re-hulled. The mixed rice is returned to the oscillating sorting plate and re-sorted, and the brown rice is taken out as finished rice in a hulling sorter. After the start of the hulling, the rice grains flowing out on the sorting plate 9 are observed. Move the switch 77 slightly to increase the hulling roll interval, and when there is a lot of rice, finely adjust the fine movement switch 77 to narrow the hulling roll interval. After the above manual fine adjustment is completed, the roll gap is automatically adjusted. This is an automatic control method in the hulling sorter.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 1 denotes a hulling unit, 2 denotes a swing sorting unit, and both the hulling unit 1 and the swing sorting unit 2 have a front rectangular box shape. Designed,
The hulling unit 1 is slightly higher than the swing sorting unit 2 and the hulling unit 1
A rice paddy discharge blower 3 is provided on the left side on the side, and a finished rice thrower 4 is provided on the right side on the swing sorting section 2 side. A mixed rice bucket elevator 5 is provided behind the hulling unit 1, and a fixed storage tank 6 is provided at an outlet of the mixed rice bucket elevator 5.
Is provided.

[0007] As shown in Figs. 3 and 4, a swing sorting device 7 provided in the swing sorting unit 2 includes a distributing device 8 at an upper portion thereof.
At the lower part, there are provided a group of several stacked sorting plates 9,
Is supported by an underframe 10 by a swing support rod 11 (FIG. 3), and is formed so as to swing left and right when the cam wheel 12 is rotated by a motor 13. The sorting plate 9 has a constant outflow angle in the front-rear direction, but a distribution angle in the left-right direction is formed so as to be adjustable in accordance with a sorting state. When the right side is moved up and down around the center 16, the right and left inclination is changed. This adjustment is performed through the viewing window 17.
The switch 18 is operated by observing the sorting state from FIG. 2 (FIG. 2). As shown in FIG. 4, the distributing device 8 has a bottom plate 19 formed in a stepped shape so that the grains move rightward by swinging, and the abutting portion in the moving direction reaches the sorting plate 9 of each stage. A division port 20 is formed.

Each of the sorting plates 9 is low on the front side and high on the rear side and is inclined in the front-rear direction.
And a second partition plate 22 are provided. The right side of the first partition plate 21 is a brown rice discharge unit 23, and a portion between the first partition plate 21 and the second partition plate 22 is a mixed rice discharge unit 24, and the second partition plate 22 is provided. On the further left side is a paddy rice discharging unit 25, and as shown in FIG. 4, the first partition plate 21 is a screw rod 27 rotated by a second adjusting motor 26.
The second partition plate 22 has a structure in which it can be freely moved in the left and right direction by a screw rod 29 which is rotated by a third adjustment motor 28.

Next, the structure of the hulling unit 1 will be described.
The hulling unit 1 formed in the shape of a front box is provided with a supply hopper 30 at the top, and a bottom plate 31 of the supply hopper 30.
The supply port 32 is formed so as to be lower toward the right swing sorting unit 2 side, and the supply port 32 is formed at a position shifted to the right side, and a pair of hulling rolls 33, 34 is provided below the supply port 32. Right hulling roll 34 of low height among hulling rolls 33 and 34
Is fixed by rotating with a fixed roll. The hulling roll 33 on the left side, which is high, is a movable roll, and is provided so as to be freely movable toward and away from the fixed roll.

At the lower position of the hulling rolls 33 and 34, there is provided a wind selection path 35 whose left side is higher, and at the lower left side of the wind selection path 35 a paddy wheel 36 having an impeller 36 whose axis is in the front-rear direction. A discharge blower 3 is provided. Reference numeral 37 denotes an inclined bottom plate of the wind selection path 35.
A conveyor 39 is provided on the mixed rice receiving gutter 38 for transporting the mixed rice rearward, and a discharge portion of the conveyor 39 is connected to a lower end of the mixed rice bucket elevator 5. 4
Numeral 0 denotes a paddy gutter trough 40 reaching the impeller 36, a second trough 41 is provided between the mixed rice trough 38 and the paddy gutter trough 40, and a second trough 41 is provided on the second trough 41. A conveyor 42 is provided, and the second conveyor 42 is provided with a second slower 43.

The second thrower 43 is connected to a return paddy trough 44 provided above the mixed rice trough 38, and a switching valve 46 as shown in FIG. When the switching valve 46 is switched to the position indicated by the solid line, the second product is taken out of the machine via the extraction gutter 47.

A brown rice outlet 48, a mixed rice outlet 49, and a paddy rice outlet 50 are provided below the sorting plate 9 of the swinging sorting unit 2 on the discharge side, and the brown rice outlet 48 and the mixed rice outlet 50 are provided. 4
At the lower part of 9 is a finished rice spiral 51 of a uniaxial opposite spiral in the left-right direction.
And a mixed rice spiral 52 is provided, and a finished rice spiral 51 on the right side, which conveys brown rice from the brown rice outlet 48, is connected to the finished rice slower 4 having an impeller 53, and a mixed rice outlet 49.
The mixed rice spiral 52 for conveying the mixed rice from the rice is connected to face the mixed rice receiving trough 38. Rice paddy outlet 50
Is connected so as to face the return paddy trough 44, and the returned paddy collected in the return paddy trough 44 is returned to the supply hopper 30 by the return slotter 54 and reprocessed.

In FIG. 2, reference numerals 60 designate inspection windows provided on both front and rear sides of the fixed storage tank 6. The inspection windows 60 are used to adjust the amount of hulling by checking the remaining state of the mixed rice.

FIG. 7 shows the supply hopper 30 and the hulling roll 3
It is an example of the enlarged view of 3 and 34, the return chamber 61 is formed in the side part of the supply hopper 30, and the switching valve 62 is provided between the supply hopper 30 and the return chamber 61, and the switching valve 62 is one side. When switched, grains are supplied from the supply hopper 30,
When the switching valve 62 is switched to the other side, the grains are supplied from the return chamber 61. Further, a screw 64 that is rotated by a roll gap adjusting motor 63 is screwed into the top 65 provided on the support arm 65a of the hulling roll 33, and the roll gap is adjusted by rotating the roll gap adjusting motor 63 forward and reverse. .

FIG. 8 is a cross-sectional view of the hulling unit 1. The hulling chamber 67 having the hulling rolls 33 and 34 at the top of the hulling unit 1 and the hulling rolls 33 and 34 at the lower part of the hulling unit 30 is shown in FIG. A wind selection chamber 68 is formed at a lower portion of the chamber 67, and the supply hopper 30, the hulling chamber 67, and the wind selection chamber 68 are surrounded by a rear wall 72 and a front wall 73, and a substantially square hulling unit is formed. 1 and
A hulling drive chamber 69 is provided between the hulling chamber 67 and the rear wall 72.
Between the wind selection chamber 68 and the rear wall 72.
A return device room 70 is formed between the wind selection room 68 and the front wall 73. 74 is a motor for the hulling roll.

FIGS. 9 and 10 show the hulling roll 3 of the present invention.
FIG. 11 shows a control panel for the gaps 3 and 34. FIG. 11 shows an operation switch for the hulling roll motor 74, 76 is a stop switch for the same, and 77 is a fine movement switch for slightly rotating the roll gap adjusting motor 63. , 78 are supply shutters of the supply hopper 30 (FIG. 8), 79 is a supply shutter detection switch that turns on when the supply shutter 78 is opened, and 80 is a roll gap automatic adjustment switch, which is pressed before the start of hulling. Then, the initial setting of the roll gap is performed, and during the hulling work after the initial setting of the roll gap, the automatic adjustment of the roll gap is performed. That is, when the operation switch 75 of the hulling roll motor 74 is on and the supply hopper 30 is closed, and the roll gap automatic adjustment switch 80 is manually pressed, the roll is automatically rolled for a predetermined time (for example, 5 seconds). The gap adjusting motor 63 is energized in the normal rotation direction to widen the roll gap, and the hulling roll 3
3, 34 rotate without load. The no-load current a of the hulling roll motor 74 at this time is measured and stored in the CPU. Then, the hulling roll motor 74 is automatically reversed until the rolls contact each other. The contact of the roll can be detected by comparing the current value b of the hulling roll motor 74 during reverse rotation with the no-load current value a.
When the three and 34 come into contact with each other, the hulling roll motor 74
Is larger due to the contact resistance, so that a <b
If NO, return to step 7 in FIG. 9 to continue reverse rotation,
When a <b becomes YES, the process proceeds to the next step, and the timer is used for a predetermined time (for example, about 1.2 seconds) by a timer.
Is automatically rotated forward to widen the interval between the hulling rolls 33 and 34 to about 0.8 mm, and the initial setting is completed.

Next, the supply shutter 78 of the supply hopper 30 is manually opened (step 11), and
Although the hulling is performed at 3, 34, the interval between the hulling rolls 33, 34 is initially set to about 0.8 mm as described above. However, when the rice is poorly dried, it is not hulled much. In order to finely adjust this by visual inspection, the mixed rice flowing onto the sorting plate 9 was observed, and when the hulling was strong, the fine movement switch 77 was pushed and the hulling roll interval was widened by the roll gap adjustment motor 63. When the hulling is weak, the fine movement switch 77 is pressed down to narrow the hulling roll interval. When the fine movement switch 77 is pressed once, the roll gap is adjusted by about 0.2 mm.

After the manual fine adjustment is completed as described above, the roll gap automatic adjustment switch 80 is pressed again to automatically adjust the roll gap. Then, as shown in the flow of FIG.
4 is automatically measured (step 1).
5). After that, the motor 7 for the hulling roll in operation
The working current value d of Step 4 is measured, and if the error exceeds 20% as compared with the reference current value c and the working current value d, Step 12 is performed.
And adjust again. When the reference current value c and the working current value d are compared, if the error is within 5%,
Continue the hulling work as it is, and exceed 5% of the work current value d
Is smaller, the roll gap adjusting motor 63 is reversed for about 0.3 seconds, and the gap between the hulling rolls 33, 34 is reduced by about 0.2 mm. When the work current value d is larger than 5%, the roll gap adjusting motor 63 is rotated. 63 is rotated forward for about 0.3 seconds to widen the interval between the hulling rolls 33 and 34 by about 0.2 mm.

[0019]

Next, the operation will be described. (General hulling action) Put rice into the supply hopper 30,
When the supply shutter 78 of the supply hopper 30 is opened, the hulling is performed by the hulling rolls 33 and 34, and the hulling is sucked in the air selection path 35 in the air selection chamber 68, released by the hulling discharge blower 3, and air-selected. The mixed rice falls into the mixed rice receiving trough 38, is sent back by the conveyor 39, is supplied to the lower end of the mixed rice bucket elevator 5, is fried, and is stored in the fixed storage tank 6.

When the open / close shutter of the fixed storage tank 6 is opened as appropriate, the mixed rice is supplied from the fixed storage tank 6 to the distribution device 8 and moved to the dividing port 20 by the vibration of the bottom plate 19 of the distribution device 8 to be divided. It is divided at the mouth 20 and supplied to the sorting plate 9 of each stage. The sorting plate 9 is swung right and left by the cam wheel 12 rotated by the motor 13, but a large number of swinging projections which can swing to the right in the drawing are formed on the plate surface of the sorting plate 9, so that the specific gravity is heavy. Brown rice moves to the right side in the figure, and rice with a low specific gravity moves to the left side in reaction, and mixed rice that is not separated is distributed in the center. The brown rice collected in the brown rice discharge section 23 on the right side falls into the brown rice outlet 48, and the finished rice spiral 5
At 1, it is transferred to the right, flows into the impeller 53 of the finished rice thrower 4, and is jumped up and taken out.

The sorting state of the sorting plate 9 can be seen through the see-through window 17, but if the grain is too close to the brown rice discharge section 23 side, the switch 18 is turned off because the right and left inclination is not enough. Operate the first adjusting motor 14 of FIG.
, The screw rod 15 is rotated to raise the right side of the selection plate 9, and in the opposite case, the first adjustment motor 14 is reversed to lower the right side of the selection plate 9. In addition, finished rice slower 4
When a small amount of paddy rice is mixed in the brown rice taken out in step 2, the position of the first partition plate 21 is too close to the left, so that the second adjusting motor 26 is energized to rotate the screw rod 27. Then, the first partition plate 21 is moved to the right.

In the above sorting, the mixed rice dropped from the mixed rice outlet 49 is moved to the left by the mixed rice spiral 52, collected in the mixed rice receiving trough 38, and fried by the mixed rice bucket elevator 5. Further, the paddy rice extracted at the paddy rice outlet 50 is collected in the return paddy trough 44 and supplied to the supply hopper 3 by the return thrower 54.
It is returned to 0 and hulled again.

FIGS. 9 and 10 show a control flow of the hulling roll gap of the present invention, and FIG. 11 shows a switch panel. When performing initial settings before starting hulling,
The supply shutter 78 of the supply hopper 30 is manually closed, the operation switch 75 of the hulling roll motor 74 is manually turned on, and the roll gap automatic adjustment switch 80 is manually turned on. Then, automatically for a predetermined time (for example, 5 seconds)
Only the roll gap adjusting motor 63 is energized in the normal rotation direction (step 5), the rolls are separated, and the hulling rolls 33, 34
Is rotated by the hulling roll motor 74 with no load. The no-load current a of the hulling roll motor 74 at this time is measured and stored in the CPU (step 6), and then the hulling roll motor 74 is automatically reversed until the rolls 33 and 34 come into contact with each other. (Step 7). Since the contact of the roll can be detected by a change in the current value of the hulling roll motor 74, the current value b of the hulling roll motor 74 during reverse rotation is measured (step 8), and the current value b and the unloaded The current value a is compared with the current value a (step 9). When a <b is NO, the roll is not in contact, so the process returns to step 7 in FIG. 9 to continue the reverse rotation. When a <b becomes YES, the process proceeds to the next step. Then, the roll gap adjusting motor 63 is automatically rotated forward for a predetermined time (approximately 1.2 seconds) by a timer to widen the interval between the hulling rolls 33 and 34 to about 0.8 mm (step 10), and the initial setting is completed. I do.

Next, the supply shutter 78 of the supply hopper 30 is manually opened (step 11), and
Although the hulling is performed at 3, 34, the interval between the hulling rolls 33, 34 is always initially set to about 0.8 mm as described above.
Due to the difference in varieties quality, for example, when the rice is strongly dry, the rice is crushed well, but when the rice is poorly dried, the rice is not crushed much. In order to finely adjust this by visual inspection, the mixed rice flowing onto the sorting plate 9 was observed, and when the hulling was strong, the fine movement switch 77 was pushed and the hulling roll interval was widened by the roll gap adjustment motor 63. When the hulling is weak, the lower part of the fine movement switch 77 is pressed to narrow the hulling roll interval (step 12). When the fine movement switch 77 is pressed once, the roll gap is adjusted by about 0.2 mm.

After the manual fine adjustment is completed as described above, the roll gap automatic adjustment switch 80 is pressed again to automatically adjust the roll gap (step 1).
4). Then, the hulling roll motor 74 in the initial hulling operation
Is automatically measured (step 15).
Thereafter, the working current value d of the hulling roll motor 74 during the work is measured (step 17). The measured working current value d is compared with the reference current value c, and when the error with respect to the reference current value c exceeds 20% (step 18), the process returns to step 12 to perform the adjustment again. If the working current value d is smaller than the reference current value c by 5% or more (step 19), the roll gap adjusting motor 63
Is reversed for about 0.3 seconds, and the distance between the hulling rolls 33, 34 is set to about 0.2 mm (step 20). When the working current value d is larger than the reference current value c by 5% or more (step 2).
1) By rotating the roll gap adjusting motor 63 forward for about 0.3 seconds, the gap between the hulling rolls 33 and 34 is widened by about 0.2 mm (step 22). The above operation is sequentially repeated to adjust the roll gap.

[0026]

The automatic control of the hulling device described in the above-mentioned known Japanese Patent Publication No. 63-15026 is such that the hulling is performed at predetermined roll intervals from start to end, and thus the hulling of the hulling depends on the variety quality. Can not respond to. Further, the known method described in Japanese Patent Application Laid-Open No. 58-114742 has a problem in that a difference in loss rate due to a difference in product quality cannot be detected by a current value. However, in the present invention, the paddy rice put into the supply hopper is padded with a pair of paddy rolls, paddy rice is sucked and discharged by a paddy discharge blower, and mixed rice of wind-selected paddy brown rice is oscillated using a rocking sorter. In the hulling sorter, which separates the hulled rice, brown rice and mixed rice, returns the hulled rice to the supply hopper and re-grinds the mixed rice, returns it to the oscillating sorting plate and re-sorts, and brown rice takes out as finished rice. After the start of the hulling, look at the rice grains that have flowed out onto the sorting plate 9.
7 to finely move the hulling roll interval, and when there is a lot of hulled rice, finely move the fine movement switch 77 to narrow the hulling roll interval. After the above manual fine adjustment is completed, the roll gap is automatically adjusted. As a result, differences in escape rate due to differences in variety quality can be dealt with by visual adjustment, and there is an effect that complete automatic control can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a prior example.

FIG. 2 is a front view of the present application.

FIG. 3 is a front view of the inside of the swing sorting section of the present application.

FIG. 4 is a vertical sectional front view of the same part.

FIG. 5 is a front view showing a second thrower and a return thrower.

FIG. 6 is a sectional view of a second thrower.

FIG. 7 is a front view of the roll opening / closing device.

FIG. 8 is a vertical sectional side view of the hulling unit.

FIG. 9 is a hulling flow diagram.

FIG. 10 is a hulling flow diagram.

FIG. 11 is a front view of the switch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hulling part, 2 ... Pulling sorter, 3 ... Powder discharge blower, 4 ... Finished rice thrower, 5 ... Mixed rice bucket elevator, 6 ... Fixed storage tank, 7 ... Pulling sorter, 8 ... Distributor , 9 ... sorting plate, 10 ... underframe, 11 ... swinging support rod, 1
2 ... Cam wheel, 13 ... Motor, 14 ... First adjustment motor, 1
5: Screw rod, 16: Shaft attachment part, 17: Transparent window, 18: Switch, 19: Bottom plate, 20: Split port, 21: First partition plate,
Reference numeral 22: second partition plate, 23: brown rice discharge section, 24: mixed rice discharge section, 25: paddy rice discharge section, 26: second adjustment motor, 27
... Screw rod, 28 ... Third adjustment motor, 29 ... Screw rod, 30
... Supply hopper, 31 ... Bottom plate, 32 ... Supply port, 33 ... Hulling roll, 34 ... Hulling roll, 35 ... Winding path, 36 ... Wing wheel, 37 ... Sloped bottom plate, 38 ... Mixed rice gutter, 39 ... Conveyor, 40 ... paddy gutter trough, 41 ... 2nd trough, 42 ... 2nd conveyor, 43 ... 2nd slower, 44 ... return paddy trough, 45
... jumping cylinder, 46 ... switching valve, 47 ... extraction gutter, 48 ... brown rice outlet, 49 ... mixed rice outlet, 50 ... paddy rice outlet, 51 ...
Finished rice spiral, 52: mixed rice spiral, 53: impeller, 54: return slower, 60: inspection window, 61: return chamber, 62: switching valve, 63: roll gap adjusting motor, 64: screw rod, 65 ...
Coma, 65a ... support arm, 67 ... hulling room, 68 ... wind selection room,
69: hulling drive room, 70: return device room, 71: conduction room,
72 ... rear wall, 73 ... front wall, 74 ... motor for hulling roll,
75: operation switch, 76: stop switch, 77: fine movement switch, 78: supply shutter, 79: supply shutter detection switch, 80: roll gap automatic adjustment switch.

[Procedure amendment]

[Submission date] January 16, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Automatic control method in hulling sorter

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic control method in a hulling sorter.

[0002]

BACKGROUND ART Conventionally, known, in JP-B-63-15026, in which Ri hulling the paddy rice was placed in a feed hopper with a pair of hulling rolls, at hulling start, spindle roll countershaft roll Describes an apparatus which is moved toward and performs initial setting. In addition, as disclosed in Japanese Patent Application Laid-Open No.
Japanese Patent Application Laid-Open No. 114742 discloses an apparatus for automatically adjusting a roll gap based on a desquamation rate and a current value. Moreover, the hulling sorter of FIG. 1 is also known. In FIG. 1, A is a hulling wind selecting unit, B is a swing sorting unit, and the hulling wind selecting unit A has a pair of left and right rubber rolls axle mounted on the upper part and wind-selects hulling below the rubber rolls a. The wind selection part b is formed. In the swing sorting part B,
A sorting device d in which sorting plates c are stacked in multiple stages of about 5 to 6 stages is provided, and a bucket elevator e is provided behind the hulling wind selection unit A to fry mixed rice and store it at the outlet of the bucket elevator e. A tank f is provided, and is equally distributed to the swing sorting plates c of each stage via the distribution device g. A supply hopper h is provided above the hulling wind selection unit A, and when rice is supplied to the supply hopper h, hulling is performed by a rubber roll a, and hulling that is air-selected by the breeze unit b is blown by a blower i. The hulled material is fried by a bucket elevator e, flows into a storage tank f, and is supplied from a distributing device g to a sorting device d. In the sorting device d, paddy rice, mixed rice and brown rice are separated by rocking, the brown rice is taken out as finished rice by the finished rice thrower j, and the mixed rice is taken out by the bucket elevator e.
The rice is returned to the supply hopper h and is again crushed.

[0003]

The above-mentioned well-known Japanese Patent Publication No. Sho 63
In the automatic control of the hulling device described in JP-A-15026, the hulling is performed at predetermined roll intervals from time to time. Immediately
If the rice is sufficiently dried, even if the roll gap is the same,
Removed considerably, but if drying is insufficient, remove
▼ is not enough. However, from the aspect of sorting,
It is not good to get rid of more than just a little. For example, 90%
If the rice is removed, the amount of paddy is too small to sort.
No. Therefore, regardless of the varieties quality, always 7.5%
It's better to get out of it. Also, known,
What is described in JP-A-58-114742,
Differences of husking rate due to differences in varieties quality, there problem that it is not possible to detect Ri is a current value, also, the same problem as there
You. Therefore, in the present application, manual adjustment is once performed visually according to the state of the paddy rice, and then automatic adjustment is performed.

[0004]

OBJECTS OF THE INVENTION Complete, automatic control.

[0005]

Accordingly, the present invention relates to a method for producing rice crushed rice in a supply hopper 30 using a pair of hulling rolls 33,
At 34 , the hulled rice is sucked and discharged by the hulled glass discharge blower 3 , and the mixed rice of the unpolished rice, which has been wind-selected , is separated into three pieces of the unpolished rice, the unpolished rice and the mixed rice by the rocking sorter 9 , and the unpolished rice is the re paddy sliding back to feed hopper 30, mixing rice the swing sorting plate
9 and re-sorted, the brown rice is taken out as finished rice in a hulling sorting device. After the start of hulling, the rice grains flowing out onto the sorting plate 9 are observed, and when the brown rice width is large, the fine movement switch 77 is manually adjusted. Hulling roll by the roll gap adjusting motor 63
The gap between 33 and 34 is widened, and when the paddy rice width is large, the fine movement switch 77 is manually adjusted so that the roll gap adjustment motor 63
Is obtained by the automatic control method in hulling sorting apparatus that automatically controls a narrower Me a nip hulling rolls 33 and 34, the hulling roll gap from the manual fine adjustment is completed by the above-visual .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 1 denotes a hulling unit, 2 denotes a swing sorting unit, and both the hulling unit 1 and the swing sorting unit 2 have a front rectangular box shape. Designed,
The hulling unit 1 is slightly higher than the swing sorting unit 2 and the hulling unit 1
A rice paddy discharge blower 3 is provided on the left side on the side, and a finished rice thrower 4 is provided on the right side on the swing sorting section 2 side. A mixed rice bucket elevator 5 is provided behind the hulling unit 1, and a fixed storage tank 6 is provided at an outlet of the mixed rice bucket elevator 5.
Is provided.

[0007] As shown in Figs. 3 and 4, a swing sorting device 7 provided in the swing sorting unit 2 includes a distributing device 8 at an upper portion thereof.
At the lower part, there are provided a group of several stacked sorting plates 9,
Is supported by an underframe 10 by a swing support rod 11 (FIG. 3), and is formed so as to swing left and right when the cam wheel 12 is rotated by a motor 13. The sorting plate 9 has a constant outflow angle in the front-rear direction, but a distribution angle in the left-right direction is formed so as to be adjustable in accordance with a sorting state. When the right side is moved up and down around the center 16, the right and left inclination is changed. This adjustment is performed through the viewing window 17.
The switch 18 is operated by observing the sorting state from FIG. 2 (FIG. 2). As shown in FIG. 4, the distributing device 8 has a bottom plate 19 formed in a stepped shape so that the grains move rightward by swinging, and the abutting portion in the moving direction reaches the sorting plate 9 of each stage. A division port 20 is formed.

Each of the sorting plates 9 is low on the front side and high on the rear side and is inclined in the front-rear direction.
And a second partition plate 22 are provided. The right side of the first partition plate 21 is a brown rice discharge unit 23, and a portion between the first partition plate 21 and the second partition plate 22 is a mixed rice discharge unit 24, and the second partition plate 22 is provided. On the further left side is a paddy rice discharging unit 25, and as shown in FIG. 4, the first partition plate 21 is a screw rod 27 rotated by a second adjusting motor 26.
The second partition plate 22 has a structure in which it can be freely moved in the left and right direction by a screw rod 29 which is rotated by a third adjustment motor 28.

Next, the structure of the hulling unit 1 will be described.
The hulling unit 1 formed in the shape of a front box is provided with a supply hopper 30 at the top, and a bottom plate 31 of the supply hopper 30.
The supply port 32 is formed so as to be lower toward the right swing sorting unit 2 side, and the supply port 32 is formed at a position shifted to the right side, and a pair of hulling rolls 33, 34 is provided below the supply port 32. Example
The right hulling roll 34 having a lower height among the hulling rolls 33 and 34 of FIG. The hulling roll 33 on the left side, which is high, is a movable roll, and is provided so as to be freely movable toward and away from the fixed roll.

At the lower position of the hulling rolls 33 and 34, there is provided a wind selection path 35 whose left side is higher, and at the lower left side of the wind selection path 35 a paddy wheel 36 having an impeller 36 whose axis is in the front-rear direction. A discharge blower 3 is provided. Reference numeral 37 denotes an inclined bottom plate of the wind selection path 35.
A conveyor 39 is provided on the mixed rice receiving gutter 38 for transporting the mixed rice rearward, and a discharge portion of the conveyor 39 is connected to a lower end of the mixed rice bucket elevator 5. 4
Numeral 0 denotes a paddy gutter trough 40 reaching the impeller 36, a second trough 41 is provided between the mixed rice trough 38 and the paddy gutter trough 40, and a second trough 41 is provided on the second trough 41. A conveyor 42 is provided, and the second conveyor 42 is provided with a second slower 43.

The second thrower 43 is connected to a return paddy trough 44 provided above the mixed rice trough 38, and a switching valve 46 as shown in FIG. When the switching valve 46 is switched to the position indicated by the solid line, the second product is taken out of the machine via the extraction gutter 47.

A brown rice outlet 48, a mixed rice outlet 49, and a paddy rice outlet 50 are provided below the sorting plate 9 of the swinging sorting unit 2 on the discharge side, and the brown rice outlet 48 and the mixed rice outlet 50 are provided. 4
At the lower part of 9 is a finished rice spiral 51 of a uniaxial opposite spiral in the left-right direction.
And a mixed rice spiral 52 is provided, and a finished rice spiral 51 on the right side, which conveys brown rice from the brown rice outlet 48, is connected to the finished rice slower 4 having an impeller 53, and a mixed rice outlet 49.
The mixed rice spiral 52 for conveying the mixed rice from the rice is connected to face the mixed rice receiving trough 38. Rice paddy outlet 50
Is connected so as to face the return paddy trough 44, and the returned paddy collected in the return paddy trough 44 is returned to the supply hopper 30 by the return slotter 54 and reprocessed.

In FIG. 2, reference numerals 60 designate inspection windows provided on both front and rear sides of the fixed storage tank 6. The inspection windows 60 are used to adjust the amount of hulling by checking the remaining state of the mixed rice.

FIG. 7 shows the supply hopper 30 and the hulling roll 3
It is an example of the enlarged view of 3 and 34, the return chamber 61 is formed in the side part of the supply hopper 30, and the switching valve 62 is provided between the supply hopper 30 and the return chamber 61, and the switching valve 62 is one side. When switched, grains are supplied from the supply hopper 30,
When the switching valve 62 is switched to the other side, the grains are supplied from the return chamber 61. Further, a screw 64 that is rotated by a roll gap adjusting motor 63 is screwed into the top 65 provided on the support arm 65a of the hulling roll 33, and the roll gap is adjusted by rotating the roll gap adjusting motor 63 forward and reverse. .

FIG. 8 is a cross-sectional view of the hulling unit 1. The hulling chamber 67 having the hulling rolls 33 and 34 at the top of the hulling unit 1 and the hulling rolls 33 and 34 at the lower part of the hulling unit 30 is shown in FIG. A wind selection chamber 68 is formed at a lower portion of the chamber 67, and the supply hopper 30, the hulling chamber 67, and the wind selection chamber 68 are surrounded by a rear wall 72 and a front wall 73, and a substantially square hulling unit is formed. 1 and
A hulling drive chamber 69 is provided between the hulling chamber 67 and the rear wall 72.
Between the wind selection chamber 68 and the rear wall 72.
A return device room 70 is formed between the wind selection room 68 and the front wall 73. 74 is a motor for the hulling roll.

FIGS. 9 and 10 show the hulling roll 3 of the present invention.
FIG. 11 shows a control panel for the gaps 3 and 34. FIG. 11 shows an operation switch for the hulling roll motor 74, 76 is a stop switch for the same, and 77 is a fine movement switch for slightly rotating the roll gap adjusting motor 63. , 78 are supply shutters of the supply hopper 30 (FIG. 8), 79 is a supply shutter detection switch that turns on when the supply shutter 78 is opened, and 80 is a roll gap automatic adjustment switch, which is pressed before the start of hulling. Then, the initial setting of the roll gap is performed, and during the hulling work after the initial setting of the roll gap, the automatic adjustment of the roll gap is performed. That is, when the operation switch 75 of the hulling roll motor 74 is on and the supply hopper 30 is closed, and the roll gap automatic adjustment switch 80 is manually pressed, the roll is automatically rolled for a predetermined time (for example, 5 seconds). The gap adjusting motor 63 is energized in the normal rotation direction to widen the roll gap, and the hulling roll 3
3, 34 rotate without load. Roll gap adjustment at this time
The no-load current a of the node motor 63 is measured and stored in the CPU. Then, the hulling roll motor 74 is automatically reversed until the rolls contact each other. Roll contact
The current value b of the hulling roll motor 74 during reverse rotation can be detected by comparing the no-load current value a with the hulling roll 3.
When the three and 34 come into contact with each other, the hulling roll motor 74
When the value of a <b is NO, the process returns to step 7 in FIG. 9 to continue the reverse rotation. When the value of a <b becomes YES, the process proceeds to the next step. By automatically rotating the roll gap adjusting motor 63 forward (for example, about 1.2 seconds), the hulling rolls 33, 34
Is widened to about 0.8 mm, the initial setting is completed.

Next, the supply shutter 78 of the supply hopper 30 is manually opened (step 11), and
Although the hulling is performed at 3, 34, the interval between the hulling rolls 33, 34 is initially set to about 0.8 mm as described above.
Due to the difference in varieties quality, for example, when the rice is strongly dry, the rice is crushed well, but when the rice is poorly dried, the rice is not crushed much. In order to finely adjust this by visual inspection, the mixed rice flowing onto the sorting plate 9 was observed, and when the hulling was strong, the fine movement switch 77 was pushed and the hulling roll interval was widened by the roll gap adjustment motor 63. When the hulling is weak, the fine movement switch 77 is pressed down to narrow the hulling roll interval. When the fine movement switch 77 is pressed once, the roll gap is adjusted by about 0.2 mm.

After the manual fine adjustment is completed as described above, the roll gap automatic adjustment switch 80 is pressed again to automatically adjust the roll gap. Then, as shown in the flow of FIG.
4 is automatically measured (step 1).
5). After that, the motor 7 for the hulling roll in operation
The working current value d of Step 4 is measured, and if the error exceeds 20% as compared with the reference current value c and the working current value d, Step 12 is performed.
And adjust again. When the reference current value c and the work current value d are compared, when the work current value d is less than 5%, the hulling work is continued, and when the work current value d is less than 5%, the roll gap adjusting motor 63 is turned on. Reverse by 0.3 seconds, the gap between the hulling rolls 33, 34 is about 0.2 mm, and when the working current value d is larger than 5%, the roll gap adjusting motor 63 is rotated forward for about 0.3 seconds. Then, the interval between the hulling rolls 33 and 34 is widened by about 0.2 mm.

[0019]

Next, the operation will be described. (General hulling action) Put rice into the supply hopper 30,
When the supply shutter 78 of the supply hopper 30 is opened, the hulling is performed by the hulling rolls 33 and 34, and the hulling is sucked in the air selection path 35 in the air selection chamber 68, released by the hulling discharge blower 3, and air-selected. The mixed rice falls into the mixed rice receiving trough 38, is sent back by the conveyor 39, is supplied to the lower end of the mixed rice bucket elevator 5, is fried, and is stored in the fixed storage tank 6.

When the open / close shutter of the fixed storage tank 6 is opened as appropriate, the mixed rice is supplied from the fixed storage tank 6 to the distribution device 8 and moved to the dividing port 20 by the vibration of the bottom plate 19 of the distribution device 8 to be divided. It is divided at the mouth 20 and supplied to the sorting plate 9 of each stage. The sorting plate 9 is swung right and left by the cam wheel 12 rotated by the motor 13, but a large number of swinging projections which can swing to the right in the drawing are formed on the plate surface of the sorting plate 9, so that the specific gravity is heavy. Brown rice moves to the right side in the figure, and rice with a low specific gravity moves to the left side in reaction, and mixed rice that is not separated is distributed in the center. The brown rice collected in the brown rice discharge section 23 on the right side falls into the brown rice outlet 48, and the finished rice spiral 5
At 1, it is transferred to the right, flows into the impeller 53 of the finished rice thrower 4, and is jumped up and taken out.

The sorting state of the sorting plate 9 can be seen through the see-through window 17, but if the grain is too close to the brown rice discharge section 23 side, the switch 18 is turned off because the right and left inclination is not enough. Operate the first adjusting motor 14 of FIG.
, The screw rod 15 is rotated to raise the right side of the selection plate 9, and in the opposite case, the first adjustment motor 14 is reversed to lower the right side of the selection plate 9. In addition, finished rice slower 4
When a small amount of paddy rice is mixed in the brown rice taken out in step 2, the position of the first partition plate 21 is too close to the left, so that the second adjusting motor 26 is energized to rotate the screw rod 27. Then, the first partition plate 21 is moved to the right.

In the above sorting, the mixed rice dropped from the mixed rice outlet 49 is moved to the left by the mixed rice spiral 52, collected in the mixed rice receiving trough 38, and fried by the mixed rice bucket elevator 5. Further, the paddy rice extracted at the paddy rice outlet 50 is collected in the return paddy trough 44 and supplied to the supply hopper 3 by the return thrower 54.
It is returned to 0 and hulled again.

FIGS. 9 and 10 show a control flow of the hulling roll gap of the present invention, and FIG. 11 shows a switch panel. When performing initial settings before starting hulling,
The supply shutter 78 of the supply hopper 30 is manually closed, the operation switch 75 of the hulling roll motor 74 is manually turned on, and the roll gap automatic adjustment switch 80 is manually turned on. Then, automatically for a predetermined time (for example, 5 seconds)
Only the roll gap adjusting motor 63 is energized in the normal rotation direction (step 5), the rolls are separated, and the hulling rolls 33, 34
Is rotated by the hulling roll motor 74 with no load. The no-load current a of the hulling roll motor 74 at this time is measured and stored in the CPU (step 6), and then the roll gap adjusting motor 63 is automatically set to the rolls 33, 34 of each other.
Are reversed until they touch (step 7). Since the contact of the roll can be detected by a change in the current value of the hulling roll motor 74, the current value b of the hulling roll motor 74 during reverse rotation is measured (step 8), and the current value b and the unloaded The current value a is compared with the current value a (step 9). When a <b is NO, the roll is not in contact, so the process returns to step 7 in FIG. 9 to continue the reverse rotation. Then, the roll gap adjusting motor 63 is automatically rotated forward for a predetermined time (about 1.2 seconds) by a timer, and the hulling roll 3 is rotated.
When the distance between 3, 34 is increased to about 0.8 mm (Step 1)
0), initial setting is completed.

Next, the supply shutter 78 of the supply hopper 30 is manually opened (step 11), and
Although the hulling is performed at 3, 34, the interval between the hulling rolls 33, 34 is always initially set to about 0.8 mm as described above. Although the rice is hulled, it is not so hulled when the rice is poorly dried. To fine-tune this manually by hand,
Looking at the mixed rice that has flowed out onto the sorting plate 9, if the hulling is strong, press the fine movement switch 77 and press the roll gap adjusting motor 6.
3, the hulling roll interval is widened, and when the hulling is weak, the bottom of the fine movement switch 77 is pushed to narrow the hulling roll interval (step 12). When the fine movement switch 77 is pressed once, the roll gap is adjusted by about 0.2 mm.

After the manual fine adjustment is completed as described above, the roll gap automatic adjustment switch 80 is pressed again to automatically adjust the roll gap (step 1).
4). Then, the hulling roll motor 74 in the initial hulling operation
Is automatically measured (step 15).
Thereafter, the working current value d of the hulling roll motor 74 during the work is measured (step 17). The measured working current value d is compared with the reference current value c. When the measured working current value exceeds 20% of the reference current value c (step 18), the process returns to step 12 to perform the adjustment again. On the other hand, when the working current value d is smaller than the reference current value c by 5% or more (step 19), the roll gap adjusting motor 63 is set to about 0.
Reverse for 3 seconds, and set the interval between the hulling rolls 33, 34 to about 0,3.
When the working current value d is larger than the reference current value c by 5% or more (Step 20),
1) By rotating the roll gap adjusting motor 63 forward for about 0.3 seconds, the interval between the hulling rolls 33 and 34 is widened by about 0.2 mm (step 22). The above operation is sequentially repeated to adjust the roll gap.

[0026]

The automatic control of the hulling device described in the above-mentioned known Japanese Patent Publication No. 63-15026 is such that the hulling is performed at predetermined roll intervals from start to end, and thus the hulling of the hulling depends on the variety quality. Can not respond to. Further, the known method described in Japanese Patent Application Laid-Open No. 58-114742 has a problem in that a difference in loss rate due to a difference in product quality cannot be detected by a current value. However, the present invention provides a feed hopper
The hulled rice thrown into 30 is hulled by a pair of hulling rolls 33 and 34 , the hulled rice is sucked and discharged by a hulled rice discharge blower 3 , and the mixed rice of the unselected brown rice that has been wind-selected is mixed with the hulled rice by a rocking separation plate 9. separated into three parties of brown rice mixed with rice, paddy is the supply hopper
30 and re-hulling, mixed rice is returned to the oscillating sorting plate 9 and re-sorted, and brown rice is extracted in the hulling sorting device to be taken out as finished rice. watches, when brown rice width is large by manually adjusting the fine movement switch 77 roll gap adjustment motor 63 by hulling rolls 33,
Expand the 34 interval, when there are many paddy width is fine movement switch 7
7 manual adjustment is not narrow Me a nip hulling rolls 33 and 34 by the roll gap adjusting motor 63, the hulling roll gap from the manual fine adjustment is completed by the above-visual it is so arranged to automatically control, The most mixed state of mixed rice
Good selection of paddy as it can be adjusted visually to an easy state
This has the effect of sliding .

[Brief description of the drawings]

FIG. 1 is a front view of a prior example.

FIG. 2 is a front view of the present application.

FIG. 3 is a front view of the inside of the swing sorting section of the present application.

FIG. 4 is a vertical sectional front view of the same part.

FIG. 5 is a front view showing a second thrower and a return thrower.

FIG. 6 is a sectional view of a second thrower.

FIG. 7 is a front view of the roll opening / closing device.

FIG. 8 is a vertical sectional side view of the hulling unit.

FIG. 9 is a hulling flow diagram.

FIG. 10 is a hulling flow diagram.

FIG. 11 is a front view of the switch.

[Explanation of Signs] 1 ... Hulling unit, 2 ... Swing sorting unit, 3 ... Rough discharge blower, 4 ... Finished rice slower, 5 ... Mixed rice bucket elevator, 6 ... Fixed storage tank, 7 ... Swing sorting device , 8: dispensing device, 9: sorting plate, 10: underframe, 11: swinging rod, 1
2 ... Cam wheel, 13 ... Motor, 14 ... First adjustment motor, 1
5: Screw rod, 16: Shaft attachment part, 17: Transparent window, 18: Switch, 19: Bottom plate, 20: Split port, 21: First partition plate,
Reference numeral 22: second partition plate, 23: brown rice discharge section, 24: mixed rice discharge section, 25: paddy rice discharge section, 26: second adjustment motor, 27
... Screw rod, 28 ... Third adjustment motor, 29 ... Screw rod, 30
... Supply hopper, 31 ... Bottom plate, 32 ... Supply port, 33 ... Hulling roll, 34 ... Hulling roll, 35 ... Winding path, 36 ... Wing wheel, 37 ... Sloped bottom plate, 38 ... Mixed rice gutter, 39 ... Conveyor, 40 ... paddy gutter trough, 41 ... 2nd trough, 42 ... 2nd conveyor, 43 ... 2nd slower, 44 ... return paddy trough, 45
... jumping cylinder, 46 ... switching valve, 47 ... extraction gutter, 48 ... brown rice outlet, 49 ... mixed rice outlet, 50 ... paddy rice outlet, 51 ...
Finished rice spiral, 52: mixed rice spiral, 53: impeller, 54: return slower, 60: inspection window, 61: return chamber, 62: switching valve, 63: roll gap adjusting motor, 64: screw rod, 65 ...
Coma, 65a ... support arm, 67 ... hulling room, 68 ... wind selection room,
69: hulling drive room, 70: return device room, 71: conduction room,
72 ... rear wall, 73 ... front wall, 74 ... motor for hulling roll,
75: operation switch, 76: stop switch, 77: fine movement switch, 78: supply shutter, 79: supply shutter detection switch, 80: roll gap automatic adjustment switch.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsuneyoshi Goto 404 Oinomori, Tendo City, Yamagata Prefecture Inside Yamamoto Manufacturing Co., Ltd.

Claims (1)

[Claims] Claims: 1. A paddy rice fed into a supply hopper is hulled by a pair of hulling rolls, a paddy rice is sucked and discharged by a paddy discharge blower, and a mixed rice of the unselected brown rice is selected by a rocking sorter. And brown rice and mixed rice, the paddy rice is returned to the supply hopper and re-hulled, the mixed rice is returned to the oscillating sorting plate and re-sorted, and the brown rice is taken out as finished rice in a hulling sorter. After the start of the sliding, the rice grains flowing onto the sorting plate 9 are observed, and when there is a lot of brown rice, the fine movement switch 77 is manually adjusted to widen the hulling roll interval.
An automatic control method in the hulling sorter, in which the distance between the hulling rolls is adjusted by manual adjustment, and the roll gap is automatically controlled after the above manual fine adjustment is completed.