JP3026994B2 - Control device in hulling sorter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a method of separating rice grain by removing rice from a crushed rice paddle after removing the paddy with a crushing mechanism. The present invention relates to a control device in a machine.

[Conventional technology]

In recent years, as a sorter that sorts and removes brown rice from crushed rice after removal, a rotary sorter that has a brown rice trough in a horizontal rotary sorter that has a number of recesses formed on the inner peripheral surface has been developed. It has been developed.

This rotary sorter supplies the crushed rice (mixture of paddy and brown rice) after removal into the rotary sorting cylinder, and after the crushed rice is raised to a certain height by the rotation of the rotary sorting cylinder, it is placed on the bottom. On the way to the discharge side of the rotary sorting cylinder while forming a fluidized bed that repeats the falling flow, the brown rice fitted in the recess is scraped up to a high position and falls, and the paddy is lower than the brown rice. Utilizing the phenomenon that the rice can only be picked up to the height position, the brown rice that has been picked up to a high position and then falls is received by the brown rice gutter and taken out of the machine.

By the way, as the rotational speed of the rotary sorting cylinder increases / decreases, the height of scraped-up rice in the rotary sorting cylinder varies depending on the size of the grains. That is, when the speed is high, the rice is scooped up to a high position, so that not only the unpolished brown rice but also the unpolished rice is mixed into the unpolished brown trough, and the sorting accuracy is reduced. Conversely, when the speed is low, only a low height position can be lifted, so that the amount of brown rice falling into the brown rice gutter decreases, and the sorting performance deteriorates.

Focusing on this phenomenon, the applicant of the present application has previously described Japanese Patent Laid-Open No. 63-39.
In Patent No. 675, at the rear side plate located on the opposite side to the scraping rice scraping side in the rotary sorting drum among the left and right side plates in the brown rice trough, at appropriate intervals in the vertical direction of the rear side plate A plurality of grain sensing sensors are provided, and based on the detection results of the plurality of grain sensing sensors, control is performed to adjust the rotation speed of the rotary sorting cylinder so that brown rice hits the grain sensing sensor at a predetermined position in a large amount. Proposed.

Further, in Japanese Utility Model Laid-Open Publication No. 1-88782, a scale of a speed setting device for instructing a speed change position to a speed change means for adjusting a rotation speed is provided at each position of the plurality of grain sensing sensors, A configuration configured to correspond to each of the halfway positions is disclosed.

[Problems to be solved by the invention]

However, even if the scale of the setting device is increased and the control for simply increasing the rotational speed of the rotary selection cylinder and the control for decreasing the rotational speed are executed based on the detection result corresponding to the scale position, the frequency of the switching increases. However, there is a problem that a so-called hunting phenomenon occurs during the control.

The present invention is to solve the above problems, while reducing the number of kernel sensing sensors installed,
It is an object of the present invention to provide a hulling sorter that can be controlled so as to eliminate the hunting phenomenon during control.

[Means for solving the problem]

In order to achieve this object, the invention described in claim 1 is:
Eliminating mechanism and a rotary sorting mechanism with a brown rice trough in a horizontal rotating sorting cylinder with a number of recesses formed on the inner peripheral surface. It is configured to supply to the supply side of the drum, and the rear plate located on the opposite side to the scraping rice scraping side in the rotary sorting drum among the left and right side plates in the brown rice trough, A hulling sorter provided with a plurality of grain sensing sensors at appropriate intervals in the vertical direction and provided with control means for adjusting the rotation speed of the rotary sorting cylinder so that brown rice hits the grain sensing sensor at a predetermined position more. From the detection signals corresponding to the number of grain collisions per unit time in each of the grain sensing sensors, calculate the difference between the absolute values of the detection signals in each of the two grain sensing sensors, based on the difference value, Increase or decrease the rotation speed of the rotary sorting cylinder Those having a control means for executing control to.

The invention according to claim 2 comprises a removing mechanism, and a rotary sorting mechanism provided with a brown rice trough in a horizontal rotating sorting cylinder having a number of recesses formed on an inner peripheral surface thereof. It is configured to supply the crushed rice from the mechanism to the supply side of the rotary sorting cylinder, and is located on the opposite side of the left and right side plates of the brown rice trough from the side where the crushed rice is picked up in the rotary sorting cylinder. A plurality of grain detection sensors are provided on the rear side plate at appropriate intervals in the vertical direction of the rear side plate, and the rotation speed of the rotary sorting cylinder is adjusted so that the main flow of brown rice hits the grain detection sensor at a predetermined position. In a hulling sorter provided with control means to perform
Discrimination control means for discriminating from a detection signal of the plurality of grain sensing sensors into an actual section including the respective grain sensing sensor installation locations and a virtual section adjacent to the actual sensing section and not including the grain sensing sensor installation locations. Provided, when it is determined that a large amount of the main flight of the flight is gathered in the feeling section far from the optimum section of the feeling section, the fluctuation rate of the speed increase or deceleration of the rotation speed of the previous rotation sorting cylinder is set to a medium, When it is determined that a large amount of the main flight of the flight is gathered in the virtual section adjacent to the optimum section, the fluctuation rate of the speed increase or deceleration of the rotation speed of the rotary sorting cylinder is reduced, and the most distant from the optimum section. When it is determined that a large number of the main flying streams are gathered in the virtual section, control is performed so as to increase the rate of increase or decrease in the rotation speed of the rotary sorting cylinder.

〔Example〕

In the following, an embodiment in which the present invention is applied to a hulling sorter will be described. In the figure, a hulling sorter is a box-shaped wind screening device 1 that is long horizontally, The sliding mechanism 2 and the rotary sorting mechanism 3 mounted on the right upper surface of the wind sorting device 1 constitute the whole.

The hulling mechanism 2 includes a case 4 with a hulling supply hopper 5.
A pair of removal rolls 6 and 7 provided in the case 4; a manual opening / closing shutter 8 provided between the removal rolls 6 and 7 and the paddy supply hopper 5; A valve and a reed roll are provided, and the paddy supply amount control valve is rotated by an actuator, and is configured to detect a rotation angle of the paddy supply amount control valve by a potentiometer. .

The wind screening device 1 has a suction and dust fan 12 at its left end.
Air intake 13 at the right end side, and a cross flow fan 14 at a substantially middle portion, and an air passage 15 from the atmospheric air intake 13 to the suction / dust exhaust fan 12 via the cross flow fan 14. , 16 is formed, and in the middle of the air path 16, a polished rice wind selection unit 17 for polished rice falling from the hulling mechanism 2 is
In the air passage 15, brown rice wind selection units 18 for brown rice from the rotary sorting mechanism 3 are provided.

The rice hulls after the rice hulls are selected by the rice crushing unit 17 are sent to the rotary sorting mechanism 3 by a bucket type conveyor 20 from a rice hull gutter 19 with a spiral conveyor, while the brown rice The brown rice that has been finished in the wind selection section 18 is taken out of the machine by a bucket type conveyor 22 from a brown rice gutter 21 with a spiral conveyor.

On the other hand, the rotary sorting mechanism 3 includes a rotary sorting cylinder 24 laterally provided in a box-shaped case 23, and the rotary sorting cylinder 24 includes a pair of left and right rollers 25, 25 protruding from the inner surface of the box-shaped case 23. Supported rotatably.

The roller 25 is rotationally driven by a belt-driven transmission from a drive motor 26 having a variable number of rotations, and the rotary sorting cylinder 24 rotates in the direction of arrow A in FIG.

One end of the rotary sorting cylinder 24 farther from the hulling mechanism 2 is formed on an open supply side 24a, and the other end near the hulling mechanism 2 is formed on an open discharge side 24b. Torso 24
On the inner surface, a number of recesses 27 having a size enough to fit brown rice are formed.

Further, in the rotary sorting cylinder 24, various troughs of brown rice troughs are provided so as to extend in the axial direction of the sorting cylinder. That is, the spiral conveyor 24 has a spiral conveyor inside.
A brown rice trough 28 having a 29 is provided so as to be supported by the box-shaped case 23, and is also provided inside the right side of the brown rice trough 28, that is, at a portion on the side where the mixed rice is scraped in the rotary sorting cylinder 24. A mixed rice trough 30 having a spiral conveyor is mounted parallel to the brown rice trough 28.

The spiral conveyor in each of the receiving troughs 28 and 30 is also driven to rotate by the motor 26 so as to transfer the grains in the trough from left to right in FIG.

Reference numeral 31 denotes a finishing control valve for adjusting the amount of brown rice jumping into the brown rice receiving gutter 28, and an actuator 31a is provided at one end of a turning support shaft of the finishing adjusting valve 31 so that the turning angle thereof can be adjusted. I do.

Reference numeral 33 denotes a sensor plate for detecting the so-called inner volume by detecting the layer thickness of the rubbed rice in the rotary sorting drum 24, and a rotary sensor of the sensor plate 33 has an inner volume sensor such as a potentiometer. The thickness of the fluidized bed of the crushed rice in the sorting cylinder 24, that is, the amount of the crushed rice in the rotary sorting cylinder 24 is detected by the rotation angle of the sensor plate 33.

On the side of the bucket type conveyor 20 for the rubbed rice, a supply passage 32 is provided so that the crushed rice lifted by the bucket type conveyor 20 flows down, and the lower end of the supply passage 32 is connected to the rotary sorting cylinder. Connected to a supply chute looking into one end of the mixed rice gutter 30 at 24. In addition,
The other end of the mixed rice receiving trough 30 has a rotary sorting cylinder 24
And a mixed rice supply port 30a is provided in the supply side 24a.

Further, one end of the brown rice receiving gutter 28 in the rotary sorting cylinder 24 is connected to a supply gutter to the brown rice wind selecting unit 18 via an outlet chute 34.

On the inner peripheral surface of the discharge side 24b of the rotary sorting cylinder 24,
An inwardly projecting annular weir plate is provided, and
At the end of b, a plurality of blades 36 are protruded on the inner surface, and a paddy receiving chute 37 arranged at the upper part in the end of the discharge side 24b is
The hulling mechanism 2 communicates with the inside of the hulling supply hopper 5.

On the other hand, a plurality (three in this embodiment) of grain detection sensors 40a, 40b, 40c are provided on the rear side plate 28b of the brown rice trough 28 at an appropriate interval in the vertical direction. Each of the grain sensing sensors is a pressure-sensitive element capable of sensing the frequency of collision or the strength of the collision pressure when brown rice falling after being picked up by the rotary sorting cylinder 24 collides with each of the grain sensing sensors. Etc.

Reference numeral 41 denotes a threading rate detection sensor for detecting a threading rate from the crushed rice after being crushed by the hulling mechanism 2, and a path until the crushed rice enters the rotary sorting mechanism 3; For example, it is provided at an arbitrary location such as the conveyor 20 or the supply passage 32.

The protruding rate detection sensor 41 includes a projector that irradiates infrared light or red light close to the infrared light provided on the lower end side of a detection gutter that is inclined and provided in a case with a detachable lid, and the light is used as an object to be inspected. It is a so-called transmissive sensor consisting of a light receiver that receives the transmitted light after passing through the smashed rice.
It is to judge whether the rice is a paddy, count the number of the particles at appropriate unit time, and detect the loss rate by calculation in a control device such as a microcomputer.

Reference numeral 42 denotes a rotation selection cylinder which receives the output signal of the brown rice rate sensor 41, controls the husking rate in the hulling mechanism 2, and receives detection signals from the plurality of grain detection sensors 40a, 40b, 40c. A control means for controlling the rotation speed of 24, which is a central control device such as a microcomputer, including a clock, a read-only memory (ROM), a readable / writable memory (RAM), an I / O interface, and the like. Reference numeral 44 denotes a display device such as an LED lamp which allows an operator to recognize a section of the mainstream of flying of the kernel by the kernel sensing sensor.

With this configuration, paddy is put into the paddy supply hopper 5, and the crushed rice that has escaped in the crushing mechanism 2 is crushed in the crushed rice wind selection unit 17 immediately below the crushed rice, and then crushed rice gutter 19 And feed chute 32 from bucket type conveyor 20
After being sent to the upper end of the mixing rice receiving trough 30 and entering the other end of the mixing rice trough 30 in the rotary sorting cylinder 24, it is supplied from the mixing rice supply port 30 a at one end of the mixing rice trough 30 to the supply side 24 a in the sorting cylinder 24. Is done.

The rubbed rice supplied into the sorting cylinder 24 is repeatedly lifted up to a certain height by the rotation of the sorting cylinder, and thereafter, repeatedly flows down to the bottom, forming a fluidized bed of a certain thickness and discharging side 24b.
It is transported to head to. In the course of this fluid transfer, the brown rice in the polished rice is lifted to a relatively high position in a state of being fitted in the concave portion 27 and then falls, and the paddy of the polished rice falls from a position lower than the brown rice. By doing, only the brown rice enters the brown rice trough 28, and some paddy enters the mixed rice trough 30 together with the brown rice.

The brown rice that has entered the brown rice trough 28 is sent to the brown rice selection section 18 via the outlet chute 34, where it is finished and sorted so that small rice is removed, and then taken out of the machine by the bucket conveyor 22. On the other hand, some brown rice containing paddy that has entered the mixed rice receiving gutter 30 is supplied again to the supply side 24a in the selection drum 24 together with the smashed rice from the hulling mechanism 2, and is subjected to the sorting operation again.

Further, the rubbed rice moving in the sorting cylinder 24 toward the discharge side 24b is sorted in such a way that the brown rice enters the brown rice trough 28 and the mixed rice trough 30 as described above, It becomes almost only paddy as it approaches the discharge side 24b,
The paddy discharged from the discharge side 24b of the both-rotation sorting cylinder 24 flows into the paddy receiving chute 37 and enters the paddy supply hopper 5 in the paddy mechanism 2.

Then, at the time of this de-sorting operation, the rotary sorting cylinder
The control of the rotation speed of 24 is performed based on the detection signals from the brown rice rate sensor 42 and the plurality of grain detection sensors 40a, 40b, 40c as inputs and based on the flowchart of FIG.

In this case, the grain detection sensors 40a, 40b, 40c
8b is arranged at appropriate intervals above and below, so that the location (section) where the main stream α of brown rice (grain) falling toward the brown rice gutter 28 collects can be distinguished by grain detection. The determination is made so as to be larger than the number of installed sensors.

That is, of the three grain sensing sensors provided at appropriate intervals in the vertical direction of the rear side plate 28b, the rotary sorting cylinder is arranged so that the brown rice hits a predetermined position, for example, the grain sensing sensor 40b at an intermediate position in the vertical direction. In the case of controlling the rotation speed of 24, the three kernel sensors 40a, 40b,
From the detection signal of 40c, the actual feeling sections Z1, Z3, Z5 including the respective grain sensing sensor installation locations, and the virtual sections Z2, Z4, Z6 adjacent to the actual sensing sections and not including the grain sensing sensor installation locations. The discrimination control means for discriminating the classification is provided, and this discrimination control means corresponds to a discrimination circuit (arithmetic circuit) or the like in the control device 42.

The three grain sensors 40a, 40b, and 40c detect the number of grains that collide with each grain sensor at predetermined short intervals ΔT. Since a pulse having a voltage value is generated, data is transferred to a central processing unit in the control device 42 via an A / D converter and an interface in order to count the number of pulses.

This control will be described with reference to the flowchart (subroutine) shown in FIG. First, when an automatic control switch (not shown) is switched to the automatic side, an LED lamp of the display device is turned on so that an operator can recognize that automatic control is being performed.

Subsequent to the start and the initial setting, in step 301, data sampling of the number of grain collisions Na, Nb, Nc within the ΔT time detected by the three grain sensing sensors 40a, 40b, 40c, respectively, is executed, and in step 302 These are stored in.

Next, in step 303, the following calculation is performed. That is, three expressions of | Na−Nb | = A, | Na−Nc | = B and | A−B | = C are calculated, and their values are temporarily stored and held.

Next, at step 304, C
Is larger than a preset value X. This value X is determined in advance by an experiment. When C <X (when yes), it is determined that the kernel does not collide with any kernel sensor. That is, in this state, since the rotation speed of the rotary sorting cylinder 24 is low, the momentum of the kernel jumping into the brown rice trough 28 over the finishing control valve 31 is small, and the kernel does not reach the rear side plate 28b. It is determined that the flying tributaries α of the kernels gather in the virtual section Z6 that does not include the sensor installation location (see FIG. 3).

In this state, the current supplied to the drive motor 26 is greatly increased in order to increase the rotation speed of the rotary sorting cylinder 24 in step 305, and the LED lamp is turned on (step 305).

If the answer is no in step 304, the grain picked up by the rotary sorting cylinder 24 is assumed to collide with any part of the rear side plate 28b, and it is determined in step 306 whether A <X '. However, it is assumed that X <X '.

Here, when A is smaller than X '(yes), it is determined that a large amount of grain has hit between the grain sensing sensor 40a at the upper position and the grain sensing sensor 40b at the intermediate position.

That is, in the state of A <X ′, the main flight α of the grain gathers in the virtual zone Z2 between the two adjacent grain sensing sensors 40a and 40b and not including the installation location of the grain sensing sensor. Judge. In this case, in step 307, the rotation speed of the drive motor 26 is reduced, and the main flight α of the grain detection sensor 40b at the center position is reduced.
Are collected, and in step 308, the LED lamp of the display device is turned on.

If no in step 306, B <X 'in step 309
It is determined whether or not B is smaller than X '(yes), and it is determined that a large amount of grain has hit between the grain sensor 40c at the lower position and the grain sensor 40b at the intermediate position. Will be.

That is, in the state of B <X ′, the main flight α of the kernels is gathered in the virtual zone Z4 between the two adjacent kernel sensors 40b and 40c and not including the installation location of the kernel sensors. Judge. In this case, in step 310, the rotation speed of the drive motor 26 is increased, and the main flight α
Are collected, and in step 311, the LED lamp of the display device is turned on.

In this way, by making use of the calculation results A, B, and C of the number of grain collisions in each grain sensing sensor, as described above,
Since it is determined that the difference between the detection signals of the two grain sensing sensors to be compared is small, even if the rear side plate 28b vibrates during the operation of the apparatus, the influence of the vibration is the detection error of the grain sensing sensor. Is less affected.

When the determination in step 309 is no, the determination in steps 304 and 306 has been completed, so that the flight main stream α
Are gathered in any of the real feeling zones Z1, Z3, and Z5 including the installation locations of the three grain sensing sensors.

Therefore, in step 312, a comparison is made between the number Na of grains in the grain sensor 40a at the upper position and the number Nb of grains in the grain sensor 40b at the central position, and N
If a <Nb is not satisfied (no), then in step 313, Na <Nc
It is determined whether or not.

When no in step 313, that is, when Na is larger than both Nb and Nc, the kernel sensor at the upper position
When a lot of grains collide with 40a, the main stream of flight α
Can be determined to be in a state where many are gathered in the real feeling section Z1, the drive motor 26 is controlled to the deceleration side, and the LED lamp is turned on at the same time (step 31).
4, step 315).

If yes in step 312 or step 313,
In step 316, it is determined whether or not Nb <Nc.
Is larger than any of Na and Nc, when a lot of grains are colliding with the grain detection sensor 40b at the center position, and when the flight mainstream α is in a state where a lot of the real feeling section Z3 is gathered Since it can be determined, this state is set to the optimum rotation speed of the rotary sorting cylinder 24, the speed is maintained, and the LED lamps are turned on at the same time (steps 317 and 318).

When the result of step 315 is yes, Nc is larger than either of Na and Nb, and when a large amount of grains are colliding with the grain detection sensor 40c at the lower position, the flight mainstream α is in the real feeling zone Z5. In this state, the rotation speed of the rotary sorting cylinder 24 is increased so that many grains collide with the grain detection sensor 40b at the center position, in other words, Flight mainstream α feels zone Z3
Is controlled so that a large number is gathered, and the LED lamps are turned on at the same time (steps 319 and 320).

After turning on these LED lamps, at regular time intervals,
The sampling of data and the control of the rotation speed by the kernel sensing sensor are repeated.

In the acceleration / deceleration control of the rotation speed, when the main flight α is gathered in the upper and lower virtual sections Z2 and Z4 adjacent to the optimum section Z2, the fluctuation rate of the acceleration or deceleration is reduced, and the actual feeling section is reduced. When the main flight α is gathered in Z1 and Z5, the speed increase or deceleration fluctuation rate is set to a medium,
Further, in the state of the virtual section Z6 farthest from the optimum section Z2, if the control pattern is changed such as increasing the speed-up fluctuation rate, the access to the final rotation speed becomes quick. In addition, the hunting phenomenon is eliminated.

Even if the steps of the flowchart shown in FIG. 4 are repeated N times (100 times in the embodiment), for example, the rotation sorting cylinder 24
When the drive motor 26 is in a speed-up state or a deceleration state, whether the loss rate in the hulling mechanism 2 is abnormal or not is determined.
Since it can be analogized that the supply amount of the rice that has been dropped into the rice is abnormal, the worker may be alerted by issuing an alarm or the like.

〔The invention's effect〕

As described above, the invention according to claim 1 includes the removal mechanism and the rotary sorting mechanism provided with the brown rice gutter in the horizontal rotating sorting cylinder having a plurality of recesses formed on the inner peripheral surface. And configured to supply the crushed rice from the removal mechanism to the supply side of the rotary sorting cylinder, and oppose to the side of the left and right side plates in the brown rice trough where the crushed rice is scraped up in the rotary sorting cylinder. On the rear side plate located on the side, a plurality of grain detection sensors are provided at appropriate intervals in the vertical direction of the rear side plate, and the rotation speed of the rotary sorting cylinder is adjusted so that the brown rice hits the grain detection sensor at a predetermined position more. In the hulling sorter provided with a control means for adjusting, the detection value corresponding to the number of grain collisions per unit time in each of the grain detection sensors is used to calculate the absolute value of the detection signal in each of the two grain detection sensors. Is calculated, and based on the difference, And control means for executing control for increasing or decreasing the rotation speed of the rotary sorting cylinder, and it is possible to determine that the detection signals of the two grain detection sensors to be compared are small, so that when the apparatus is driven, Even if the rear side plate vibrates, the effect of the vibration does not affect the detection error in the grain detection sensor.

Further, the invention according to claim 2 further includes a removal mechanism, and a rotary sorting mechanism provided with a brown rice trough in a horizontal rotating sorting cylinder having a number of recesses formed on an inner peripheral surface thereof, The crushed rice from the removal mechanism is configured to be supplied to the supply side of the rotary sorting cylinder, and the left and right side plates in the brown rice trough are opposite to the side where the crushed rice is picked up in the rotary sorting cylinder. A plurality of grain detection sensors are provided at appropriate intervals in the vertical direction of the rear side plate located at the rear side plate, and the rotation speed of the rotary sorting cylinder is set so that the main stream of brown rice hits the grain detection sensor at a predetermined position. In the hulling sorter provided with a control means for adjusting the grain size, a feeling section including the location of each of the grain sensing sensors from the detection signals of the plurality of grain sensing sensors, and a grain sensing area adjacent to the feeling section. Distinguish between virtual sections that do not include sensor installation locations Is provided with the determination control unit, so that the grains of flight mainstream of gather section come flying in brown rice 受樋 direction, can be distinguished on the larger number of sections than the installation number of the grain detection sensor.

Then, when it is determined that a large amount of the main flight of the flight is gathered in an actual feeling section that is apart from the optimal section among the actual feeling sections, the rate of increase or decrease in the rotation speed of the rotary selection cylinder is set to a medium, When it is determined that a large amount of the main flight of the flight is gathered in the virtual section adjacent to the optimum section, the fluctuation rate of the speed increase or deceleration of the rotation speed of the rotary sorting cylinder is reduced, and the virtual section farthest from the optimum section is reduced. When it is determined that a large amount of the main stream of flying is gathered in the section, control is performed so as to increase the rate of change in the speed of rotation or deceleration of the rotation sorting cylinder, so that access to the optimum rotation speed is limited. At the same time, it is possible to eliminate the hunting phenomenon in the control of adjusting the rotation speed of the rotary sorting cylinder so that the brown rice hits the grain detection sensor at a predetermined position more frequently. Since it is possible to also change the control mode for each fine interval, than is an effect that hunting also eliminated to an effect that it is possible to improve the accuracy of the control.

[Brief description of the drawings]

Drawings show an embodiment of the present invention, FIG. 1 is a cross-sectional view of the entire hulling sorting apparatus, and FIG.
FIG. 3 is a sectional view taken along the line II-II of FIG. 3, FIG. 3 is an explanatory diagram of a grain detecting sensor unit, and FIG. 4 is a flowchart of control. 2 ... rice hulling mechanism, 5 ... rice padding hopper, 6, 7 ... removal roll, 24 ... rotary sorting cylinder, 26 ... drive motor, 27 ...
Recess, 28 ... Brown rice gutter, 28b ... Back plate, 40a, 40b, 40c
...... Grain detection sensor, 42 ... Control device.

Claims (2)

(57) [Claims] 1. A sliding mechanism comprising: a removing mechanism; and a rotary sorting mechanism provided with a brown rice gutter in a horizontal rotating sorting cylinder having a plurality of recesses formed on an inner peripheral surface thereof. The fallen rice is configured to be supplied to the supply side of the rotary sorting cylinder, and the rear side plate located on the opposite side of the left and right side plates of the brown rice trough from the side where the scraped rice is scraped up in the rotary selection drum is provided. A plurality of grain sensing sensors provided at appropriate intervals in the vertical direction of the rear side plate, and control means for adjusting the rotation speed of the rotary sorting cylinder so that the brown rice hits the grain sensing sensor at a predetermined position more. In the hulling sorter, from the detection signals corresponding to the number of kernel collisions per unit time in the kernel detection sensor, a difference between the absolute values of the detection signals in the two kernel detection sensors is calculated, and the difference is calculated. Based on the value, the rotation speed of the A control device in a hulling sorter, comprising: control means for executing control for increasing or decreasing. 2. A sliding mechanism comprising: a removing mechanism; and a rotary sorting mechanism provided with a brown rice gutter in a horizontal rotating sorting cylinder having a plurality of recesses formed on an inner peripheral surface thereof. The fallen rice is configured to be supplied to the supply side of the rotary sorting cylinder, and the rear side plate located on the opposite side of the left and right side plates of the brown rice trough from the side where the scraped rice is scraped up in the rotary selection drum is provided. A plurality of grain sensing sensors are provided at appropriate intervals in the vertical direction of the rear side plate, and control means for adjusting the rotation speed of the rotary sorting cylinder so that the mainstream of brown rice hits the grain sensing sensor at a predetermined position. In the hulling sorter provided, an actual feeling section including the respective grain sensing sensor installation locations from the detection signals of the plurality of grain sensing sensors, and excluding a kernel sensing sensor installation location adjacent to the actual sensing section. Provision of discrimination control means to distinguish between virtual sections When it is determined that a large amount of the mainstream of the flight is gathered in a real feeling section that is far from the optimum section among the real feeling sections, the rate of increase or decrease in the rotation speed of the rotary selection cylinder is set to a medium rate, and the optimum When it is determined that a large amount of the main stream of flying is gathered in a virtual section adjacent to the section, the fluctuation rate of the speed increase or deceleration of the rotation speed of the rotary sorting cylinder is reduced, and the virtual section farthest from the optimal section. When it is determined that a large amount of the main stream of flying is gathered, a control device for the hulling sorter is characterized in that it controls so as to increase the rate of increase or decrease in rotation speed of the rotary sorting cylinder.