JPH09122600A - Controller of oscillation separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable even a beginner to efficiently make sepn. operation while assuring working performance by effectively utilizing the unhulled rice and unpolished rice discriminating sensor of the unpolished rice partition plate controller of an oscillation separator and making it possible to decide whether the sepn. state of an oscillation separating plate is defective or non-defective. SOLUTION: The position where one grain of unhulled rice is detected during prescribed time by the unhulled rice and unpolished rice discriminating sensor while the oscillation separating plate 2 of the oscillation separator is kept moved back and forth by directing the upper side of its discharge side 2b in a transverse direction is determined as the boundary position between the unhulled rice and the unpolished rice. The movement of the unpolished rice partition plate 4 is adjusted in association with the detection of the boundary between the unhulled rice and the unpolished rice. The sepn. performance is decided to be degraded when the number of the unhulled rice grains detected in the prescribed time by the unhulled rice and unpolished rice discriminating sensor deviates from the range of a reference number of grains. The sepn. performance is then restored by adjusting the increase or decrease of the grain supply rate to the oscillation separating plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a swing sorting device.

[0002]

2. Description of the Related Art While shaking a mixed rice from a high supply side to a low discharge side in a vertical direction of an oscillating sorting plate, the mixed rice is oscillated up and down in a horizontal direction, and brown rice is moved to an upper side of a horizontal high level. In a swing sorting device that sorts unhulled rice on the lower rocking side and unsorted mixed rice in the middle of these, a brown rice partition plate is provided on the discharge side of the rocking sorting plate. It is known that a paddy / brown rice discrimination sensor for detecting a sorting state is provided on the discharge side of the dynamic sorting plate, and the brown rice partition plate is moved and adjusted upward or upward based on the detection result of the paddy / brown rice discrimination sensor.

[0003]

DISCLOSURE OF THE INVENTION The present invention relates to a brown rice partition plate control device for a swing sorting device as described above.
By effectively using the brown rice discrimination sensor and adding a part of the configuration, in addition to controlling the brown rice partition plate, it detects whether or not the sorting state of the rocking sorting plate has deteriorated and improves the control function. This is intended to facilitate the operation.

[0004]

The present invention has taken the following technical means in order to solve the problems of the prior art. That is, according to the present invention, while the mixed rice is flowing from the higher supply side 2a in the vertical direction of the swing selection plate 2 to the lower discharge side 2b, the upper and lower sides in the horizontal direction are oscillated vertically and horizontally. Brown rice on the upper side 2c of the No., and paddy on the lower side 2d of the lower side.
The oscillating sorting device for selecting the non-sorted mixed rice in the middle portion in a non-uniform distribution, and the oscillating sorting device, which is arranged to face the downflow discharging portion of the sorted grains on the discharging side 2b of the oscillating sorting plate 2, The brown rice partition plate 4 that can be reciprocally adjusted from the rocking side 2c to the rocking side 2d, and the position that is arranged above the discharge side 2b of the rocking sorting plate 2 and detects a certain number of grains of rice during a predetermined time. A paddy / brown rice discrimination sensor 9 having a distribution boundary position of the paddy / brown rice, a sensor moving means for reciprocating the paddy / brown rice discrimination sensor 9 in the lateral direction of the swing selection plate 2, and the paddy / brown rice discrimination sensor 9 Based on the partition plate control means for adjusting and controlling the brown rice partition plate 4 in connection with the detection of the boundary between the unhulled rice and the unpolished rice, and the deviation of the unhulled rice grain detection sensor 9 from the standard hull detection grain number at a predetermined time. A sorting performance judging means for judging deterioration of the sorting performance; A configuration of a control device of a rocking sorting device, which comprises an adjustment control device for displaying a reduction in the sorting performance in connection with the determination of the sorting performance deterioration of the performance determining device or for adjusting the adjusting unit to restore the sorting performance; It was done.

[0005]

[Function] While the paddy / brown rice discrimination sensor 9 reciprocates from the rocking side 2c to the rocking side 2d above the discharge side 2b of the rocking / sorting plate 2, the number of paddy grains at a predetermined time is detected and compared with the reference grain number. While detecting the boundary position of the paddy / brown rice, the brown rice partition plate 4 is moved and adjusted to a position related to this boundary detection position, and the brown rice distributed on the rocking upper side 2c of the rocking sorting plate 2 is moved to the brown rice partition plate 4
Take it out of the partition machine.

Further, by moving the paddy / brown rice discrimination sensor 9 from the boundary detection position to the swaying side to detect the number of paddy grains detected in a predetermined time and compare it with the sorting state discrimination reference value,
It is determined whether or not the sorting state of the swing sorting plate 2 is degraded, and when the sorting state is determined to be degraded, a message to that effect is displayed on the display device, or the adjustment section of the swing sorting device is automatically displayed. Adjust to and recover the selected state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. As shown in FIG. 1, the swing sorting plate 2 of the swing sorting device 1 is inclined such that the supply side 2a on one side in the vertical direction is at a high position and the discharge side 2b on the other side in the vertical direction is at a low position, and The upper side on one side in the horizontal direction is the swinging side 2c, and the lower side on the other side in the horizontal direction is the swinging side 2d. The mixed rice is supplied from the supply hopper 3 to the supply side 2a of the swing selection plate 2, and
A brown rice partition plate 4 and a paddy partition plate 5 for partitioning the sorted grains are arranged so as to face the discharge side 2b of the rocking sorting plate 2.

Thus, the mixed rice fed to the rocking / sorting plate 2 is subjected to the reciprocal rocking in the lateral oblique direction while flowing in the vertical direction from the supply side 2a to the discharge side 2b, and is small in size. The brown rice with a high specific gravity is unevenly distributed on the rocking side 2c, and the large, light-weight paddy is unevenly distributed on the rocking side 2d. The grain thus selected is separated by the brown rice partition plate 4 and the paddy partition plate 5 and taken out.

The brown rice partition plate 4 is movably supported by a partition plate moving means 6 composed of a screw rod, and by swinging the partition plate adjusting motor 7 in the forward and reverse directions, the swing selection plate 2 is moved. This is a configuration capable of reciprocating from the uppermost swing side 2c to the lower swing side 2d. Above the discharge side 2b of the swing selection plate 2,
A sensor moving means 8 composed of a screw rod is provided along the lateral direction, and a paddy / brown rice discrimination sensor 9 is supported by the sensor moving means 8 and the sensor adjusting motor 1
The paddy / brown rice discrimination sensor 9 is configured to reciprocate laterally by reversing 0 in the normal direction. It should be noted that the grain / brown rice discrimination sensor 9 may be configured to detect the grains that are being discharged downward from the swing sorting plate 2.

In the present embodiment, the paddy / brown rice discrimination sensor 9 is constructed as follows. Irradiate the grain with near-infrared light in the wavelength range absorbed by the light emitting unit and light with another reference wavelength, and the reflected light (or transmitted light) from the grain is received by the optical filter unit and absorbed by the moisture. Only the wavelength light to be transmitted passes through the optical filter section and is sent to the light receiving section which is configured by a photodiode for the water absorption wavelength, and the reference wavelength light is refracted by the optical filter section to be referred to. The light is sent to a light receiving unit composed of a wavelength photo diode. Next, according to the amount of light received by each photodiode, the light / voltage conversion element converts the voltage into large and small voltages, and the voltage is sent to the discriminating unit of the control unit 11 with a built-in CPU for predetermined discrimination. It is a structure that distinguishes between paddy and brown rice by a threshold value.
The detection wavelength range is not limited to the above-mentioned near-infrared light, and may be any one that can discriminate between paddy and brown rice based on the amount of transmitted light or the amount of reflected light.

The control unit 11 with a built-in CPU has a paddy / brown rice discrimination sensor 9, a partition plate position sensor 12 for detecting the moving position of the brown rice partition plate 4, and a paddy / paddy rice via an input interface (not shown). Sensor position sensor 17 for detecting the moving position of brown rice discrimination sensor 9, partition plate origin position switch (upward side) 13 for detecting the movement of brown rice partition plate 4 to the uppermost swinging 2c position, lowermost position of brown rice partitioning plate 4 Partition plate origin position switch (swing side) 14, which detects movement to the side 2d position,
Sensor origin position switch (upward) 15 that detects the movement of the brown rice discrimination sensor 9 to the uppermost sway 2c position, and sensor origin position switch that detects the movement of the paddy / brown rice determination sensor 9 to the lowermost 2d position ( (Swing side) 16 are connected to each other, and a partition plate adjusting motor 7 and a sensor adjusting motor 10 are connected to the control unit 11 via an output interface (not shown). It is connected.

Next, the control contents of the control unit 11 will be described. First, while moving the paddy / brown rice discrimination sensor 9 from the most swaying upper side 2c to the swaying side 2d, the light-absorbing wavelength light and the reference wavelength light are emitted from the light emitting part of the paddy / brown rice discrimination sensor 9, and the detection voltage thereof is detected. The values are sequentially read by the control unit 11. Next, the light amount of the paddy / brown rice discrimination sensor 9 is adjusted,
The amount of brown light reflected from the moisture absorbing wavelength light and the reference wavelength light is adjusted to a predetermined detection voltage. More specifically, when the work is started, the brown rice partition plate 4 is moved to the rocking upper side 2c, and when the partition plate origin position switch (the rocking upper side) 13 is turned on, the brown rice partition plate 4 is stopped, and then, the predetermined time is elapsed from the start of the work. When the grain has become distributed over the entire width of the plate surface of the swing selection plate 2, the brown rice partition plate 4 is moved to a predetermined initial partition position where only brown rice is presumed to be distributed,
The brown rice partition plate 4 separates the brown rice, and the removal of the brown rice from the machine is started. In this state, the light amount is adjusted, the reference light amount and the sequentially changed light amount are output to the paddy / brown rice discrimination sensor 9, the detected voltage value is sequentially compared with the reference value, and the detected voltage value is equal to the reference value. When it is within the range, the light amount adjustment ends. Next, the paddy / brown rice discrimination sensor 9 is moved to the upper side 2c, and the sensor origin position switch (upside) 15 is turned on.
The paddy / brown rice discrimination sensor 9 stops at the uppermost position.

Next, the process moves to the paddy / brown rice boundary position detection control of the paddy / brown rice discrimination sensor 9. Then, as shown in the flow chart of FIG. 3, the paddy / brown rice discrimination sensor 9 is moved to the uppermost side 2c.
While moving sequentially from the position to the swaying side, the distribution state of the grains is detected every predetermined time, and the number of detected paddy grains within the predetermined time is compared with the control reference number of paddy grains to control the number of detected paddy grains. When the number of rice grains is smaller (or larger) than the reference number of grains, the rice / brown rice discrimination sensor 9 is moved down one step 2d (or the upper 2
c), and the position at which the number of detected paddy grains becomes equal to the control reference paddy grain number is set as the boundary detection position of the paddy / brown rice, and the paddy / brown rice discrimination sensor 9 is stopped, and the control unit 11 detects the sensor position. From the detection result of the sensor 17, the moving distance from the uppermost swing 2c is calculated. Next, based on the movement distance of the paddy / brown rice discrimination sensor 9, a movement command for the brown rice partition plate 4 having a predetermined distance shaking upper side 2c position as a partition position is issued, and the brown rice partition plate 4 is detected from the initial partition position. Move to the partition position based on.

Next, when the partitioning control of the brown rice partitioning plate 4 is completed, the process shifts to the sorting optimization control of the swing sorting plate 2. This sorting optimization control is performed every predetermined time during the partition control of the brown rice partition plate 4. As shown in FIG. 3, when shifting to this control, the paddy / brown rice discrimination sensor 9
Moves from the paddy / brown rice boundary detection position to the swaying side 2d, and the number of detected paddy grains within the above-mentioned predetermined time is input, and the increase / decrease rate of change is calculated from the comparison between the previous detected grain number and the detected grain number. The calculated increase / decrease change rate is compared with the reference change rate, and when it is outside the range of the reference comparison rate, it is determined that the distribution state of the paddy in the lateral direction is unfavorable and the selection state is deteriorated. When this determination is completed, the paddy / brown rice discrimination sensor 9 returns to the previous paddy / brown rice boundary detection position.

However, when it is determined that the sorting state is deteriorated,
The hulling device (not shown) shifts to the sludge removal rate check of the paddy rice, and it is determined whether or not the lean rate detected by the lean rate sensor 18 is an appropriate lean rate, and a standard lean rate (for example, 85 %), The roll clearance of the removing roll of the hulling device is closed and adjusted to increase the removing rate. Further, when the detected removal rate is appropriate, the swing sorting plate 2 shifts to the check of the horizontal tilt angle, and when the horizontal tilt angle does not reach the critical steep angle, the swing sorting plate 2 is reached. The lateral tilt angle of 2 is adjusted to a steep slope. In addition, when the lateral inclination angle reaches the limit steep angle, the process proceeds to the next stroke,
The opening degree check of the paddy supply control valve of the hulling device is performed, and the valve opening check of the paddy supply control valve is performed.When the opening is larger than the standard opening, the paddy supply control valve is closed and adjusted from the standard opening. When it is small, the paddy supply control valve is opened and adjusted.

Observing the lateral change state of the number of detected rice grains during the above-mentioned predetermined time during the sorting of the swing sorting plate 2, the horizontal tilt angle of the swing sorting plate 2 is shown in FIG. 4 (1). Is appropriate and the grain layer thickness is appropriate, the number of detected grains is about 75% from the uppermost 2c position in the horizontal width of the swing sorting plate 2 as shown by the solid line. It was found that the number of grains was 0, and in a width of about 25% adjacent to the rocking side 2d, the phenomenon was a wavy phenomenon in which the increase / decrease in the number of detected paddy grains was suddenly switched back and forth, and an inappropriate selection state was obtained.

Further, as shown in FIG. 4B, the swinging rotation speed of the swing selecting plate 2 is also a proper swinging rotation.
At 5 rpm, the proper selection state is obtained, but when the rotation speed is reduced by 15 rotations, for example, an unsuitable rotation is generated, which causes a corrugation phenomenon as described above, which deteriorates the selection state, and also in relation to the supply amount of the swing selection plate 2. As shown in FIG. 4 (3), when the supply amount is appropriate, the sorting state is good. However, when the supply amount is increased or decreased to be inappropriate, the waviness phenomenon is caused and the sorting state is changed. It gets worse as well.

On the other hand, if the grain layer thickness becomes thicker or thinner than the standard layer thickness, the distribution of the paddy will fluctuate on the upper side 2c.
When the number of detected paddy grains in the predetermined time is viewed in a predetermined horizontal direction, the number of detected paddy grains increases and shows an abnormal distribution state (indicated by a dotted line) that repeatedly increases and decreases. Becomes worse. And this worse selection is
Adjustment of the grain to be sorted to the side with a high removal rate, optimization of the grain layer thickness by adjusting the inclination angle of the swing sorting plate 2 in the lateral direction, optimization of the supply amount to the swing sorting plate 2, etc. As a result, it was found that the sorting was optimized, the distribution basin width of brown rice was widened, and the sorting efficiency was improved. This control can improve the selection efficiency of the swing selection plate 2 and facilitate the operation by utilizing such knowledge.

Next, another embodiment of the paddy / brown rice discrimination sensor 9 will be described with reference to FIGS. When detecting the paddy / brown rice discrimination sensor 9, it is intended to prevent erroneous detection between the paddy and the plate surface of the rocking sorting plate 2 such as an aluminum plate and an iron plate to improve the sorting accuracy. Paddy / Brown rice discrimination sensor 9
From the light emitting part of the, the near-infrared light in the wavelength range absorbed by water and another reference wavelength light is irradiated to the grain, the reflected light from the grain is received by the optical filter part, and the wavelength absorbed by the moisture Only the area passes through the optical filter section and is sent to the light receiving section that is composed of a photodiode for the water absorption wavelength. Depending on the amount of light received by the light receiving section, the light / voltage conversion element The configuration in which the detected voltage value is converted to paddy / brown rice by a predetermined determination threshold value is the same as that of the above-described embodiment.

The detection voltage value of the paddy / brown rice discrimination sensor 9 is sent to the control unit 11 and also input to the comparator 9a, and is compared with the reference voltage value from the pulse detection reference setting device 9b to detect the detection voltage value. Is higher than the reference voltage value, the detection signal is directly input to the AND circuit 9c and is also input to the AND circuit 9c via the one-shot multivibrator 9d, and the paddy signal is output from the AND circuit 9c. The discrimination data processing start signal passes through the interrupt input port, and then the control unit 1
1, the detection voltage value before the signal is not judged as to whether or not the paddy is detected, and the paddy / brown rice is judged only for the detected voltage value after that.

In a state where the work efficiency is low, that is, when the rocking sorting plate 2 having a small layer thickness is used for sorting, a part of the plate surface is exposed, and this exposed portion may be detected by the paddy / brown rice discrimination sensor 9. . Since this exposed portion has a detection voltage value equivalent to that of paddy, it is not possible to determine whether it is paddy detection or plate surface detection only by the detection voltage value of the paddy / brown rice discrimination sensor 9. Therefore, when the standard rocking rotation speed of the rocking / sorting plate 2 is 305 rpm, for example, the plate surface exposure time of the rocking / sorting plate 2 is about 10 msec. By utilizing the fact that the above is distributed, even if the detection voltage value of the paddy is obtained, by eliminating the data of the time that may be the exposed state of the plate surface, the detection voltage value following this It is intended to judge whether or not it is paddy and to simplify the hardware and software.

Next, the detection control of the paddy voltage value will be described. In FIG. 6A, the dotted line graph shows the paddy detection voltage value, and the solid line graph shows the detection voltage value of the exposed plate surface of the swing selection plate 2. When the voltage value of the exposed portion of the plate surface is detected by the paddy / brown rice discrimination sensor 9, the detected voltage value is output from the comparator 9a as shown in FIG. 6 (2). This detected voltage value is input to the AND circuit 9c and also to the one-shot multivibrator 9d, as shown in FIG.
A signal as shown in (3) is output from the one-shot multivibrator 9d to the AND circuit 9c, and when this output ends, it is determined that the normal detection of the plate surface exposure state has ended. Then, from the AND circuit 9c to FIG.
6, the data processing start signal is output to start the discrimination, and the paddy / brown rice discrimination sensor 9 outputs the paddy detection voltage value shown in FIG. 6 (5), and the control unit 11 discriminates the paddy / brown rice. The value is compared with the threshold value in the section to determine the paddy detection voltage value.

In determining the difference between the paddy and the exposed surface,
In the case of using the peak width of the paddy equivalent pulse voltage value,
Although it is necessary to hold the pulse voltage value during the measurement of the peak width, there is a drawback that both the hardware and the software become complicated. It is possible to accurately detect paddy while simplifying the above.

[0024]

As described above, the present invention effectively utilizes the paddy / brown rice discrimination sensor 9 of the brown rice partition plate control device of the rocking sorting device to judge the quality of the rocking sorting plate 2 in the selected state. It is possible to do so, while ensuring proper selection even for beginners,
The selection work can be done efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view

FIG. 2 is a block diagram.

FIG. 3 is a flowchart.

FIG. 4 is a graph showing a selection state

FIG. 5 is a block diagram.

FIG. 6 is a time chart showing detection data.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Oscillating sorting device, 2 ... Oscillating sorting plate, 2a ... Supply side, 2
b ... discharge side, 2c ... rocking side, 2d ... rocking side, 3 ... supply hopper, 4 ... brown rice partition plate, 5 ... paddy partition plate, 6 ... partition plate moving means, 7 ... partition plate adjusting motor, 8 ... Sensor moving means, 9
... Rice / Brown rice discrimination sensor, 10 ... Sensor adjustment motor, 11
... Control unit, 12 ... Partition plate position sensor, 13 ... Partition plate origin position switch (upward), 14 ... Partition plate origin position switch (downward), 15 ... Sensor origin position switch (upward), 16 ... Sensor Origin position switch (lower side), 17
… Sensor position sensor, 18… Stripping rate sensor

Claims (1)

[Claims] 1. The horizontal swinging plate 2 is slanted up and down in a horizontal direction while flowing the mixed rice from a high feed side 2a in the vertical direction to a low discharge side 2b in the vertical direction to move the high and low side in a horizontal direction. Swinging 2
An unbalanced sorting device for selecting brown rice in c, unhulled rice in the lower rocking side 2d, and an unsorted mixed rice in the middle part of these, and a discharging side 2b of the shaking sorting plate 2. A brown rice partition plate 4 which is arranged so as to face the downflow discharge portion of the sorted grains and which can be reciprocally adjusted in the direction from the upside 2c to the downside 2d.
And a paddy / brown rice discrimination sensor 9 which is disposed above the discharge side 2b of the rocking / sorting plate 2 and which has a position where a predetermined number of grains have been detected during a predetermined time as a paddy / brown rice distribution boundary position, Paddy
A sensor moving means for reciprocating the brown rice discrimination sensor 9 in the lateral direction of the swing selection plate 2 and the paddy of the paddy / brown rice discrimination sensor 9
The partitioning plate control means for adjusting and controlling the brown rice partitioning plate 4 in connection with the detection of the boundary of the brown rice, and the sorting performance based on the deviation of the number of grains detected by the paddy / brown rice discrimination sensor 9 from the reference grain number at a predetermined time. Sorting performance determining means for determining a decrease, an adjustment control means for displaying a reduction in the sorting performance in connection with the sorting performance deterioration determination of the sorting performance determining means, or adjusting the adjustment unit to recover the sorting performance, A control device for a swing sorting device.