JPH10244228A - Unpolished rice partition plate control apparatus of hulling sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the partitioning control of an unpolished rice partition plate. SOLUTION: An unhulled rice/unpolished rice distinguishing sensor 30 detects the boundary position of unhulled rice and unpolished rice during the sorting work by a shaking sorting plate 15 and an unpolished rice partition plate 18 is moved and regulated to a partitioning position displaced from a boundary detection position to a shaking-up side by a predetermined distance. A dehulling ratio of hulled falling rice hulled by a hulling roll during the partitioning control of the unpolished rice partition plate 18 is calculated by a dehulling tatio sensor and the reference dehulling ratio corresponding to the displacing distance up to the partitioning position of the unpolished rice partition plate 18 displaced from the boundary detection position of unhulled rice/unpolished rice of the unhulled rice and unpolished rice distinguishing sensor 30 to the shaking-up side is compared with the calculated dehulling ratio of the dehulling ratio sensor to distinguish whether the dehulling ratio of the hulling roll is proper and, when the calculated dehulling ratio is low, the gap between dehulling rolls 7, 7 is regulated so as to be narrowed. By this constitution, the partitioning control of the unpolished rice partition plate 18 is performed in relation to the opening and closing regulation of the gap between the hulling rolls 7, 7 and the control accuracy of the unpolished partition plate is enhanced and the mixing of unhulled rice with unpolished rice can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brown rice partitioning plate control device for a hulling sorter.

[0002]

2. Description of the Related Art A brown rice partitioning plate control device in a swing sorting type rice hulling sorter detects a distribution boundary position of rice and brown rice of sorted grains on a swing sorting plate with a rice / brown rice discrimination sensor. The configuration is such that the brown rice partition plate is moved and adjusted to a partition position deviated upward by a predetermined distance with respect to the boundary position detection.

[0003]

In the above-mentioned conventional apparatus, the boundary position between the grain and the brown rice of the selected grain on the swinging sorting plate is detected by the rice / brown rice discrimination sensor, and the boundary position is detected by a predetermined value. Although the configuration is such that the brown rice partition plate is moved and adjusted to the partition position deviated upward in the distance, it is deviated upward in the predetermined distance from the paddle / brown rice boundary detection position, assuming a standard predetermined loss rate. The position is set as the partition position. However, if the escape rate of the smashed rice that is hulled by the hulling roll is lower than the standard escape rate, the width of the mixed rice distribution area will increase,
There was a problem that rice was mixed into brown rice.

[0004] Therefore, the present invention is directed to a method of producing rice hulls that are hulled by a hulling roll, with the deviation distance from the partitioning position of the brown rice partition plate that is deviated upward from the boundary detection position of the rice / brown rice. By controlling the relationship with the loss rate of the rice in a related manner, it is possible to solve the problems of the conventional apparatus and improve the accuracy of brown rice partition plate control.

[0005]

The present invention employs the following technical means in order to solve the problems of the prior art. That is, the present invention provides a pair of hulling rolls 7,
Roll gap control means for adjusting the opening and closing of the roll gap on the basis of the removal rate, and the removal rate for detecting the removal rate of the rice crushed by the hulling rolls 7, 7. A sensor 55, a swing sorting plate 15 for sorting mixed rice while reciprocating swinging, and a paddy / brown rice discriminating sensor 30 detects a boundary position of the paddy / brown rice of the swing sorting plate 15 from the boundary detection position. Brown rice partition plate control means for moving and adjusting the brown rice partition plate 18 to a partition position deviated upward by a predetermined distance, and the brown rice partition plate 1 by the brown rice partition plate control means.
During the partitioning control of step 8, the deviation standard deviation rate and the deviation rate sensor 55 corresponding to the deviation distance from the boundary detection position of the unpolished rice / brown rice by the brown rice partitioning plate control means to the partitioning position deviated upward. And a roll gap control means for controlling the roll gap by opening and closing the roll gap based on the comparison with the detected release rate.

[0006]

[Function] During the sorting operation with the swinging sorting plate 15, when the rice / brown rice discrimination sensor 30 detects the boundary position of the rice / brown rice while moving in the horizontal direction, it shifts upward by a predetermined distance from the boundary detection position. The brown rice partition plate 18 is moved and adjusted to the partitioned position, and the brown rice is partitioned by the brown rice partition plate 18 and taken out of the machine.

[0007] During such partition control of the brown rice partition plate 18, the loss rate of the crushed rice that has been hulled by the hulling rolls 7, 7 is calculated by the husking rate sensor 55. Next, a reference slip rate corresponding to a deviation distance from the paddle / brown rice discriminating sensor 30 to the partition position that is deflected upward by a predetermined distance from the paddle / brown rice boundary detection position, The calculated husking rate is compared with the hulling rolls 7 to determine whether the husking rate is appropriate. If the calculated husking rate is lower than the reference husking rate, the hulling roll is determined. The roll gaps 7,7 are closed.

[0008]

As described above, according to the present invention, during the control of the brown rice partition plate, the brown rice partition plate control means moves from the boundary detection position of the paddy / brown rice to the partition position which is shifted upward by a predetermined distance. The opening and closing of the roll gap of the hulling rolls 7, 7 is controlled by the relationship between the standard escape rate corresponding to the deviation distance of the rice and the calculated escape rate of the polished rice. The control accuracy is improved, and it is possible to prevent paddy from being mixed into brown rice.

[0009]

Embodiments of the present invention shown in the drawings will be described below. First, the overall configuration of the hulling sorter will be described with reference to FIGS. The hulling sorter is
The rice hulling unit that performs hulling 1, the rice sifting wind selection unit 2 that wind-selects the rice smashed from the rice hulling unit 1, and the rocking that separates and sorts the mixed rice after the wind selection in the rice slicing air selection unit 2. It comprises a sorting section 3, a mixed rice fryer 4, a brown rice fryer 5, and the like.

The hulling unit 1 includes a hulling hopper 6, a hulling roll 7,
7 comprises a hulling room 8 and the like. The sliding rice style selection unit 2 includes a sliding rice style selection box 9, a sliding rice style selection path 10, a pity trough 11, a sliding rice trough 12, a suction fan 13, and a dust tube 14.
And so on. Next, based on FIG.
Will be described. The plate surfaces of the swing sorting plates 15, 15,... Are formed with unevenness for sorting, and one side in the vertical direction is a high supply side 15a, the other side is a low discharge side 15b, and one side in the horizontal direction is one side. The swing sorting plate 15 is configured to be inclined in both the vertical and horizontal directions of the swing sorting plate 15 with a high swinging upper side 15c and a lower swinging side 15d on the opposite side.
Reference numeral 5 denotes a configuration in which the swinging device reciprocally swings obliquely up and down in the horizontal direction.

A supply port on the supply side 15a of the oscillating sorting plate 15 is provided with a sliding rice receiving gutter 12, a mixed rice fryer 4, a distribution supply gutter 1
This is a configuration in which mixed rice is supplied via the distribution case 6 and the distribution case 17. The mixed rice supplied to the oscillating sorting plate 15 is sorted based on the size of the grain, the specific gravity, the coefficient of friction, and the like.
Small brown rice with a high specific gravity is distributed in a non-uniform flow on the rocking upper side 15c, and paddy with a large specific gravity compared with the brown rice is on the rocking side 15c.
d, and unmixed rice of unpolished rice and brown rice that is not separated is distributed in the middle part thereof, and these grains are brown rice provided opposite to the discharge side 15b of the oscillating sorting plate 15. It is separated and taken out by the partition plate 18 and the paddy partition plate 19.

The extracted brown rice is extracted outside through a brown rice extraction gutter 20, a brown rice channel 21, and a brown rice milling machine 5, and the mixed rice is mixed rice extraction gutter 22, a mixed rice channel 23, and a sliding rice. The dropped rice is supplied to the rocking sorting plate 15 via the falling rice receiving trough 12, the mixed rice frying machine 4, the mixed rice hopper 24, the distribution supply gutter 16 and the distribution case 17, and is re-sorted. Further, the paddy is configured such that the paddy is returned to the hulling unit 1 via the hulling discharge gutter 25, the hulling channel 26, and the hulling machine 27, and is then hulled again.

The brown rice partition plate 18 is disposed to face the discharge side of the swing sorting plate 15, and is supported movably in the lateral direction by partition plate movement adjusting means 28 formed of a screw bar. By reversing the adjustment motor 29,
It is configured to reciprocate in the lateral direction, and a partition plate origin switch (upward swing) 33 and a partition plate origin switch (downward swing) 34 are provided at the uppermost movement position and the lowermost movement position. I have.

Above the discharge side 15b of the swinging sorting plate 15,
A rice / brown rice discrimination sensor 30 is provided. The rice / brown rice discrimination sensor 30 is supported movably in the horizontal direction by a sensor moving means 31 composed of a screw bar, and reciprocates in the horizontal direction by rotating the sensor adjusting motor 32 forward and reverse. It is a configuration to do. In addition, the sensor origin switch (upward swing) 35 for detecting the movement of the paddy / brown rice discrimination sensor 30 to the uppermost 15c position and the movement of the paddy / brown rice sensor 30 to the lowermost 15d position are detected. A sensor origin switch (swinging side) 36 is provided.

Further, the roll gap of the hulling rolls 7, 7 can be opened and closed by a roll gap adjusting means (not shown). The escape rate is calculated by the escape rate sensor 55, and the calculated escape rate is compared with the reference escape rate to thereby obtain a roll gap adjusting motor (not shown).
Is a well-known configuration in which a roll gap control is performed in which an open / close control command is issued to return the calculated escape rate to the reference escape rate. The lateral inclination angle of the swing selection plate 15 can be adjusted by a lateral inclination angle adjusting means (not shown). When the angle is adjusted, the lateral inclination angle sensor 53 detects the angle.

The rice / brown rice discrimination sensor 30 is configured as follows in this embodiment. An electromagnetic wave including a moisture absorption wavelength band and a reference wavelength band which is not absorbed by moisture is irradiated to the grain from a light emitting portion constituted by an incandescent lamp, and reflected light (or transmitted light) from the grain is used for the moisture absorption wavelength band. The light is received by a detection element, which is an optical filter section, via a band-pass filter.
Further, the reference wavelength band reflected by the bandpass filter is sent to the detection element unit for the reference wavelength band via the filter,
It is converted to a voltage value and sent to the control unit 41. Then
The ratio of the two detected voltage values is calculated by the control unit 41, and it is configured to discriminate between the rice and the brown rice based on a predetermined reference value.

As shown in FIG. 3, the control unit 41 having a built-in CPU includes a rice / brown rice discrimination sensor 30, a partition plate origin switch (upward swinging) 33, and a partition plate origin switch (upward swinging).
4, a sensor origin switch (upward swing) 35, a sensor origin switch (upward swing) 36, a load current sensor 44 for detecting a load current value of the main motor 42, an operation switch 45, and a lateral inclination angle sensor 53 are input. They are connected via an interface.

The control unit 41 includes an output interface (not shown), a drive circuit, and a partition plate adjustment motor 29, a sensor adjustment motor 32, a main motor 42, and a lateral inclination. Angle adjusting motors 54 are connected to each other.
Next, control contents of the control unit 41 will be described. First,
The control of the brown rice partition plate by the rice / brown rice discrimination sensor 30 will be described. When this control is started, the paddy / brown rice discrimination sensor 30 moves the lower side 15 at a predetermined distance from the uppermost side 15c position.
Move to d, stop for a predetermined time, and detect the voltage value of the kernel. Next, the number of detected rice grains at a predetermined time is compared with a reference value, and when the number of detected rice grains is large (or small), the rice / brown rice discrimination sensor 30 is moved to the swinging side 15c (or swinging side 15d) by a predetermined distance. While continuing the boundary detection work of paddy / brown rice,
This is the detection position of the brown rice distribution boundary. Next, based on the boundary detection position of the paddy / brown rice, the partition position of the brown rice partition plate 4 is calculated, the brown rice partition plate 18 is moved to the partition position, and the brown rice is partitioned by the brown rice partition plate 18 at a position where paddy is not mixed. Brown rice is taken out of the machine.

Next, the embodiment shown in FIG. 4 will be described. In this embodiment, the rice / brown rice discriminating sensor 30 detects the boundary position of the rice / brown rice on the swing sorting plate 15 and the brown rice partition plate 1
In the brown rice partitioning plate partitioning control device for moving and adjusting 8 to a corresponding position, when the horizontal inclination angle of the swing sorting plate 15 is adjusted to be equal to or more than the set angle and the corresponding control cannot be performed by the automatic control of the brown rice partitioning plate. It informs and alerts the operator of the deterioration of sorting, and tries to prevent the mixing of unpolished rice into brown rice.

Next, control contents will be described based on the flow of FIG. During brown rice partition plate control based on the detection of the boundary between rice and brown rice by the rice / brown rice discrimination sensor 30, the presence or absence of a change in the lateral inclination angle is determined at predetermined time intervals. That is, the ON time of the adjustment by the operator of the lateral inclination angle adjusting motor 54 is detected, and the lateral inclination angle adjustment amount per unit time (calculated by a predetermined formula) from the relationship between the adjustment ON time and the lateral inclination adjustment amount. Or
Alternatively, a selection is made from a predetermined table. ) Is calculated. Next, the calculated lateral inclination angle adjustment amount is compared with the reference value. If the calculated lateral inclination angle adjustment amount is larger than the reference value, the control unit 41 notifies the display unit (not shown).

Thus, the distribution state of the grains is changed by adjusting the lateral inclination angle of the swing sorting plate 15, but when the lateral inclination angle adjustment amount is larger than a preset reference value, the adjustment speed is too fast. By making a notification, the operator corrects and adjusts. Therefore, it is possible to prevent the change in the distribution of the paddy on the swing sorting plate 15 from becoming faster than the partitioning control of the brown rice partitioning plate 18 based on the detection of the boundary position of the paddy / brown rice discrimination sensor 30, and to prevent the mixing of the paddy into the brown rice. .

In setting the control reference value, in the above-described embodiment, the amount of adjustment of the lateral inclination angle per unit time is used. However, the reference time is adjusted according to the adjustment time length per operation or the amount of adjustment of the lateral inclination angle. A value may be set. Alternatively, the adjustment amount may be calculated based on the adjustment ON time of the lateral inclination angle adjusting motor 54 and the detection angle of the lateral inclination angle sensor, and may be compared with a reference value. In addition, in the above-described embodiment, the configuration is such that both the steep inclination adjustment and the gentle inclination adjustment of the lateral inclination angle are notified, but the distribution of the paddy moves to the swinging side and the adjustment to the gentle inclination side where the sorting state becomes poor. Only the notification may be made. In addition, the above-mentioned control is performed by the following adjustment in which the sorting state of the swing sorting plate 15 is changed, for example, the increase / decrease adjustment of the amount of grain supplied to the swing sorting plate 15, the vertical / slope adjustment of the vertical inclination angle, the swing sorting plate. It is also possible to adopt a configuration in which the same control is performed in the case of adjusting the increase / decrease of the oscillating rotation speed, the increase / decrease of the grain moisture content, etc. In the above embodiment, the operator adjusts the lateral inclination angle of the swing selection plate 15 to return. However, the operator may automatically adjust the lateral inclination angle and notify the operator.

Next, the embodiment shown in FIG. 5 will be described. The control of the brown rice partition plate is performed by the rice / brown rice discrimination sensor 30.
Detect the distribution boundary position of brown rice, calculate and determine the corresponding partition position that deviates upward by a predetermined distance from the boundary detection position,
The brown rice partitioning plate 18 is moved to the partition position, and the brown rice is partitioned at the partition position where the unhulled rice is not mixed. The related partition position of the brown rice partition plate 18 where the paddy is not mixed changes. In other words, in the case of a high loss rate, the width of the mixed rice distribution area from the lower end of the brown rice distribution area to the upper end of the paddy distribution becomes wider, and in the case of a low loss rate, In
It changes so that the width of the mixed rice distribution area becomes narrow.

Thus, the paddy / brown rice discrimination sensor 30
Although the partition position of the brown rice partition plate 18 is deviated upward by a predetermined distance with respect to the boundary detection position of brown rice, the deviation distance is determined as corresponding to the reference loss rate at which no paddy is mixed at the partition position. Is done. In this embodiment, the roll gaps of the hulling rolls 7, 7 are related so as to prevent the falling rate of the crushed rice from dropping below the reference falling rate corresponding to the deviation distance. The purpose is to prevent rice mixing into brown rice.

Next, control contents will be described based on the flow of FIG. When this control is started during the partitioning control of the brown rice partitioning plate, sample grains are supplied from the hulled rice selected by the hulling rolls 7 and 7 to the dehulling rate sensor 55, and When the number of grains reaches the predetermined number, the loss rate is calculated from the number of brown rice grains and the number of rice grains. Next, the calculated loss rate and the reference value (the unpolished rice is not mixed into the unpolished rice even if the unpolished rice is separated by the unpolished rice partition plate 18 which is displaced upward by a predetermined distance from the undetected rice / unpolished rice boundary by the unpolished rice / brown rice discrimination sensor 30. Is compared with the reference escape rate) to determine whether the escape rate is appropriate.

If the calculated escape rate is not appropriate, it is determined whether or not it is higher than the reference escape rate. If the calculated escape rate is high, the roll gap between the hulling rolls 7, 7 is reduced. When the opening is adjusted and the calculated escape rate is low, the roll gap is closed and adjusted. If the calculated escape rate is appropriate, the hulling operation is continued while maintaining the roll gap as it is. As described above, the paddy is adjusted so that the paddy ratio is higher than the paddy ratio at which the paddy is not mixed at the partition position that is above the paddle / brown rice boundary detection position of the paddy / brown rice discrimination sensor 30 by a predetermined deviation distance. Since the roll gap between the sliding rolls 7, 7 is adjusted, it is possible to prevent the mixing of unpolished rice into brown rice and improve the accuracy of controlling the brown rice partition plate.

The above control may be applied to an apparatus as shown in FIG. That is, the partition plate movement adjusting means 28
The brown rice partition plate 18 is movably supported, and the partition plate adjustment mode
The brown rice partition plate 1 is obtained by rotating the
8 is reciprocated, and the paddy / brown rice discrimination sensor 30 is supported at a position of a distance “a” deviated to the lower side by a predetermined distance with respect to the brown rice partition plate 18, and the paddy / brown rice discrimination sensor 30 and the brown rice partition The configuration is such that the plate 18 and the plate 18 move integrally while maintaining a predetermined relational position, and the paddy / brown rice discrimination sensor 30 is controlled to detect the boundary position between the paddy / brown rice.

Further, instead of the above-described embodiment, when the loss rate is calculated by the loss rate sensor 55, the deviation distance a is shortened so as not to mix paddy in accordance with the calculated loss rate. It may be configured to perform automatic correction.

[Brief description of the drawings]

FIG. 1 is an overall cut side view.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a block diagram.

FIG. 4 is a flowchart.

FIG. 5 is a flowchart, cutaway plan view.

[Explanation of symbols]

1 ... rice hulling part, 2 ... rice falling rice style selection part, 3 ... rocking sorting part, 4 ...
Mixed rice fryer, 5 ... Brown rice fryer, 6 ... Rice hopper, 7 ... Rice hulling roll, 8 ... Rice hulling room, 9 ... Rice crushed rice selection box, 10 ... Rice crushed rice selection path, 11 ... Pity trough, 12: sliding rice trough, 13: suction fan, 14: dust cylinder, 15: swing sorting plate, 16: distribution supply gutter, 17: distribution case, 18: brown rice partition plate, 19
... Rice partition plate, 20 ... Brown rice extraction gutter, 21 ... Brown rice channel, 22
... mixed rice extraction gutter, 23 ... mixed rice channel, 24 ... mixed rice hopper, 25 ... paddy extraction gutter, 26 ... paddy channel, 27 ... paddying machine,
28 ... partition plate movement adjusting means, 29 ... partition plate adjustment motor,
30 ... Rice / brown rice discrimination sensor, 31 ... Sensor moving means, 3
2 ... Sensor adjustment motor, 33 ... Partition plate origin switch (upward), 34 ... Partition plate origin switch (downward), 35 ...
Sensor origin switch (upward swing), 36 ... Sensor origin switch (downward swing), 41 ... Control unit, 42 ... Main motor, 44
... Load current sensor, 45 ... Operation switch, 51 ... Non-volatile memory, 52 ... Operation panel, 53 ... Slope angle sensor, 54 ... Slope angle adjustment motor, 55 ... Slope rate sensor

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B07B 13/16 B07B 13/16 A

Claims (1)

[Claims] A roll gap control means for adjusting the roll gap between a pair of hulling rolls on the basis of a dipping rate, and the hulling rolls are hulled by said hulling rolls. A removal rate sensor 55 for detecting the removal rate of the dropped rice, a swing sorting plate 15 for sorting mixed rice while reciprocatingly swinging, and a paddy of the swing sorting plate 15 by a paddy / brown rice discrimination sensor 30. Brown rice partition plate control means for detecting the boundary position of brown rice and moving and adjusting the brown rice partition plate 18 to a partition position deviated upward by a predetermined distance from the boundary detection position; and brown rice partitioning by the brown rice partition plate control means. During the partition control of the plate 18,
The deviation standard deviation rate corresponding to the deviation distance from the rice / brown rice boundary detection position of the brown rice partition plate control means to the partitioning position deviated upward and the detection deviation rate of the deviation rate sensor 55 are described. And a roll gap control means for controlling the roll gap by opening and closing the roll gap by comparison.