JP3132257B2 - Control device of hulling sorter - Google Patents

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 hulling sorter, and more particularly, to automatically determine the type of a hulling sorter.
It is intended to facilitate control.

[0002]

2. Description of the Related Art In a rice hulling sorter comprising a rice hulling unit, a rubbed rice sorting unit, and a mixed rice sorting unit, based on the detection results from various sensor groups, the adjusting unit automatically adjusts the various parts. There are those that do sliding work.

[0003]

In such a hulling sorter, the size of a main motor, a hulling roll, and a mixed rice sorting unit differs for each model. In the case of the control type, the control unit differs for each model, and the main mode is controlled according to the model.
And the automatic control unit must be changed, and the parts management is troublesome. Therefore, the present invention is to solve such a disadvantage of the related art.

[0004]

Means for Solving the Problems In order to solve such a problem, the following technical configuration is adopted. That is, a hulling unit controller 25 for controlling a part of the hulling sorter, a crushed rice wind selection unit controller 26, and a mixed rice sorting unit controller.
Controller 27 is connected to the main controller 24, respectively, and the controller groups 25, 26, and 27 of these parts automatically adjust the adjusting units of the respective parts based on the detection data of the sensor group. A type for determining the type from the load current value of the hulling unit driving motor 31 at no load at the set frequency and the load current value of the hulling unit driving motor 31 at no load at the change frequency. A hulling sorter comprising a judging means and a reference value correcting means for correcting the control reference values of the controller groups 24, 25, 26, 27 to those of the determined type in relation to the type judgment of the type judging means; This is the configuration of the control device.

[0005]

At the start of the hulling operation, a load current sensor (not shown) uses a load current value of the hulling unit driving motor 31 at no load at a set frequency and a hulling unit driving motor at a changed frequency. The load current value of the
Based on the difference between the detected load current values, the type of the hulling sorter is automatically determined, and then the main controller 24, the hulling unit controller 25, and the smashed rice wind selection unit controller.
The control reference values of the controller 26 and the mixed rice sorting section controller 27 are corrected to those corresponding to the determination type. Then
During the hulling sorting operation, the detection results detected by the various controller groups are compared with the corrected control reference value to control the adjustment unit, and the automatic control according to the model is smoothly performed. Will be

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in FIGS. 1 to 3 will be described below. First, the overall configuration of the hulling sorter will be described with reference to FIG. This rice hulling sorter is a rice hulling unit that performs hulling 1, a rice hulling rice wind selection unit 2 that wind-selects rice hulled from the rice hulling unit 1, and a rice hulling rice sorting unit 2 It is composed of a rocking sorter 3 for sorting crushed rice into paddy and brown rice and a frying transport unit 4. Then, the rice hulling unit 1 is arranged in the upper part of the front of the fuselage, and the rice hull rice selection unit 2 is arranged in the lower part of the airplane, respectively. The mixed rice fryer 5 and the rice fryer 6 of the fryer transporting section 4 are arranged, and the rocking sorter 3 is arranged behind the mixed rice fryer 5 and the rice fryer 6, and rocked. The configuration is such that the brown rice fryer 7 of the fryer transporting section 4 is arranged behind the sorting device 3.

The hulling unit 1 includes a hulling hopper 8, a hulling roll 9,
The rice crushed by the rice crushing unit 1 is constituted by a rice crushing room 10 and the like, and the rice crushed by the rice crushing unit 1 is provided in the lower rice crushing rice selection path 2 below.
It is a configuration to flow into. The rice-slide selection unit 2 includes a rice-slice selection box 11, a rice-slide selection path 12 sloping from the lower rear to the upper front of the rice-slice selection box 11, pity reception Gutter 13,
It is composed of a rubbed rice receiving gutter 14, a suction duster 15, a dust discharge tube 16, and the like.

Next, the swing sorting apparatus 3 will be described.
The flat rectangular swing sorter plates 17, 17,... Are formed with uneven portions for sorting, and one side in the vertical direction (the front-rear direction orthogonal to the paper surface of FIG. 1) is a high supply side, and the other side is opposite. The other side is the lower discharge side, and the horizontal direction perpendicular to the vertical direction (Fig. 1
(A left-right direction perpendicular to the plane of the drawing) is a high swinging upper side, and the lower side opposite to the lower swinging side is a lower swinging side.
7,... Are configured to be inclined on both the vertical and horizontal surfaces.

.. Are oscillating arms 1.
Are supported so as to be able to reciprocate up and down in the horizontal direction and one of the oscillating arms 18 is oscillated by an oscillating device 19. A supply port is provided on the vertical supply side of the oscillating sorting plates 17, 17,..., And the crushed rice that has been fried by the mixed rice fryer 5 passes through the distribution supply gutter 20 and the distribution case 21. Are supplied to the swing sorting plates 17, 17,... The mixed rice supplied to the oscillating sorting plates 17, 17,... Has a large specific gravity, a large and small specific gravity, and a large and small friction coefficient. The unbalanced distribution in the upper brown rice distribution basin, and the paddy with a large specific gravity compared to the brown rice, are distributed in the unsteady distribution in the laterally swaying downside rice distribution basin, and in the middle part of the mixed rice distribution basin. Mixed rice of unseparated paddy and brown rice is distributed unevenly.

[0010] Opposed to the discharge side of the swing sorting plate 17, a brown rice partition plate 22 and a paddy partition plate 23, which are movable in the lateral direction of the swing sorting plates 17, 17, ..., are arranged. The unbalanced brown rice distributed in the 17 brown rice distribution basin is separated and taken out by the brown rice partition plate 22, taken out of the machine through the brown rice fryer 7, and also drifted into the mixed rice distribution basin of the swinging sorting plate 17. The mixed rice thus obtained is partitioned and taken out by the brown rice partitioning plate 22 and the paddy partitioning plate 23, and is fried through the mixed rice flow path and the mixed rice fryer 5, and further mixed rice hopper, distribution and supply gutter 20 and distribution After passing through the case 21, it is circulated to the swinging sorting device 3 and is sorted again. In addition, the paddy which has drifted to the paddy distribution basin of the swing sorting plate 17 is separated and taken out by the padding partition 23, returned to the paddy section 1 through the paddy channel and the paddy mill 6, and again padded. Is done.

Next, FIGS. 2 to 3 will be described. The main controller 24 includes a rice hulling section controller 25, a rice-slipped rice selection section controller 26, and a mixed rice selection section controller 2
7 are connected to each other by a communication line or a normal signal line. These controller groups include a CPU having a built-in calculation unit and a register unit, and a calculation control unit including a program memory and a calculation memory.

Operation panel of main controller 24 (not shown)
The switch 28 and the supply amount setting switch 2
9. An operation switch 30 is provided, and these switch groups are provided by an arithmetic control unit (not shown) of the main controller 24.
It is connected to the. In this hulling unit controller 25,
A load current sensor (not shown) for detecting a load current value of the hulling unit drive motor 31 and an opening of a hulling supply control valve (not shown) for adjusting the amount of hulling supplied to the hulling rolls 9, 9. The detection data is input from a paddle supply valve opening sensor (not shown) for detecting the rotation speed, and the inverter 3 from the hulling unit controller 25.
2, a hulling unit driving motor 31, a hulling roll 9,
A control command signal is sent to a roll gap adjusting motor 33 for adjusting the gap of No. 9 and a paddy supply amount adjusting motor 34 for adjusting the amount of paddy supplied to the hulling unit 1. Note that the inverter 32 is an inverter and an inverter control device (including a base drive circuit, a sine wave generation circuit, an oscillator, a voltage controller, a linear commander, a speed setting device, and the like). It is configured.

Detection data from a wind sensor (not shown) and the like are output to the controller 26 for sloping rice wind selection unit.
2, a suction rotation speed adjusting motor 35 for adjusting the rotation speed of the suction and discharge device 15, and a pressurized air blower (not shown, provided below the swing sorting device 3, and a swing sorting device). 3. The brown rice selected in step 3 is selected by wind, and the selected wind after the selection of brown rice flows into the sliding rice wind selection path 12.) A control command signal is sent to the dust drive motor 35a and the compressed air drive motor 36a.

Further, the controller 27 for the mixed rice sorting section comprises:
Detection data is input from various sensor groups (not shown),
Further, a swing motor 37 for driving the swing sorting plate 17 from the controller for mixing rice sorting section 27 via an inverter 32, and a brown rice switching valve (a regulating section of a swing sorting apparatus type). The grain extracted from the swing sorting plate 17 is switched to the outside take-out side or the inside circulation side of the machine.
A swing rotation speed adjusting motor 3 for adjusting the swing rotation speed of 7,.
9. A brown rice partition plate adjusting motor 40 for adjusting the movement of the brown rice partition plate 22, and a cylindrical rotation speed adjusting motor 41, a cylindrical drive motor 42, which is a rotary selection cylindrical type adjusting portion, and Upper net angle adjusting motor 4 which is an adjusting part of stone type mixed rice sorting part
3. A control command signal is sent to each of the middle / lower net angle adjusting motors 44 and the like.

Next, the control contents of the main controller 24, the hulling unit controller 25, the crushed rice wind selection unit controller 26, and the mixed rice selection unit controller 27 will be described. First, the user operates the escape rate setting switch 28 and the supply amount setting switch 29 to set the desired escape rate and work efficiency, and then operates the operation switch 30. Then, the operation contents of these switch groups are transmitted to the hulling unit controller 25, the crushed rice wind selection unit controller 26, and the mixed rice selection unit controller 27, and the rotation of the hulling separator is performed. Each part is driven. Roller gap adjusting motor 3 from hulling unit controller 25
A command signal for setting an initial gap is output to 3 and the hulling roll gap is adjusted and set to a predetermined initial gap (for example, 1 mm). Next, an initial opening command signal is output to the rice supply adjusting motor 34, and the rice supply adjusting valve (not shown) of the rice hulling unit 1 is output.
Is set to a predetermined opening (for example, 10 mm), and the hulling operation is started. Next, a supply command signal based on the large / medium / small supply amount setting of the supply amount setting switch 29 is output to the paddy supply control motor 34, and the paddy supply control valve (not shown) corresponds to the set efficiency. The opening is adjusted.

Next, the gap control of the hulling rolls 9, 9 based on the husking rate or the load current value is started, so that the husking rate detected by the husking rate sensor (not shown) becomes the control reference husking rate. Alternatively, when the load current value of the hulling unit drive motor 31 is detected by a load current sensor (not shown), the roll gap adjustment motor is adjusted so that the detected value becomes the control reference load current value. A control command signal is output to the negative electrode 33, and the rice is crushed while maintaining a predetermined loss rate.

The hulling controller 25 includes a load current sensor (not shown) for detecting the load current value of the hulling unit drive motor 31 and the amount of chaff supplied to the hulling rolls 9, 9. Detection data is input from a paddy supply valve opening sensor (not shown) that detects the opening of a paddy supply control valve (not shown) that adjusts the pressure, and an inversion signal is sent from a paddy section controller 25. -T3
2, a hulling unit driving motor 31, a hulling roll 9,
A control command signal is sent to a roll gap adjusting motor 33 for adjusting the gap of No. 9 and a paddy supply amount adjusting motor 34 for adjusting the amount of paddy supplied to the hulling unit 1. As described above, when the rice hulling sorting operation is started, the detection data from the wind sensor (not shown) is input to the rice-sliding rice selection unit controller 26, and the rice-sliding rice selection is performed. A command signal from the controller 26 is sent to the inverter 32,
When the suction rotation speed adjusting motor 35 rotates forward or backward, the rotation speed of the suction / discharger 15 is adjusted. Similarly, a control command signal is sent to the pressure air rotation speed adjusting motor 36, The number of rotations of the compressed air (not shown) is adjusted. In addition, during the hulling sorting work, the mixed rice sorting section control
Detection data from various sensor groups (not shown) are input to the mixer 27, and a control command signal is sent from the mixed rice sorting unit controller 27 to the inverter 32, and the mixed rice sorting unit swings. In the case of the sorting device type, the number of rotations of the swing motor 37 or the inclination angle of the swing sorting plate 17 is adjusted, and the grain distribution in which the grains are distributed over the entire swing sorting plate 17 is provided. The same control command signal is sent to the control and the brown rice switching valve switching motor 38 to switch the brown rice switching valve (not shown) to control the removal of brown rice that does not contain paddy and to select mixed rice. In the case where the section is a rotary sorting cylinder type, detection data from a grain scattering detection sensor (not shown) of the rotary sorting cylinder (not shown), a cylindrical rotation speed sensor (not shown) of the rotary sorting cylinder, or the like is used. , A similar control command signal is output to the motor 4 for adjusting the rotational speed of the cylinder.
1, sent to the cylindrical drive motor 42 to control the rotation speed of the rotary sorting cylinder, and, if the mixed rice sorting section is of the all-stone type, a group of all-stone (not shown) sensors The detection data such as the thickness of the fluidized bed, the flow velocity, and the inclination angle are sent to the controller 27 for the mixed rice sorting section, and the same command signal is sent from the controller 27 for the mixed rice sorting section to the upper net angle adjusting mode. TA 43,
The output is output to the middle / bottom net angle adjusting motor 44, and the hulling sorting operation is performed while the inclination angles of the upper net, the middle net, and the lower net (not shown) are adjusted. As described above, the control at the start of the work and the control during the work are performed. At the start of the work, when the main switch (not shown) is turned on and the power is connected, the paddy is set at the set frequency m. The sliding portion drive motor 31 is rotated, and the load current value is detected by a load current sensor (not shown). Next, a command signal for changing to the change frequency n is output from the main controller 24 to the inverter 32 of the main controller 24, and the hulling unit drive motor 31 is driven at the change frequency n, and the load current is changed. A load current value is detected by a sensor (not shown). The type of the hulling unit drive motor 31 is automatically determined based on the difference between the two detected load current values,
The size (5 inch or 3 inch) of the hulling rollers 9, 9 of the hulling unit 1 is determined. Then, based on this type determination,
Main controller 24 and hulling unit controller 25,
The control reference values of the controller 26 and the controller 27 are changed to those corresponding to the judgment type.

When the type is determined, the load current value of the hulling unit drive motor 31 at a predetermined frequency and a predetermined voltage under no load is detected and compared with a reference current value of a reference table. Thus, the model may be determined, and the present invention is not limited to this embodiment. Next, FIGS. 4 and 5 will be described.

A main hulling roll 9a and a sub hulling roll 9b are supported on a hulling gear box 45 of the hulling unit 1. The sliding main shaft 46 is integrally connected in a state where the shaft centers coincide with each other, and the power transmitted to the hulling main shaft 46 is directly transmitted to the main hulling roll 9a via the shaft portion and the hulling gear box. 45, the power is transmitted to the auxiliary hulling roll 9b via a reduction gear transmission (not shown). From hulling unit controller 25 to inverter 32
Are connected to a main hulling roll 9a, a sub hulling roll 9b, a hulling motor 47 for driving and a hulling roll gap adjusting motor 33 for adjusting a hulling roll gap. ing. Similarly, a suction / dust generator motor 48 is connected via the hulling unit controller 25 or the inverter 32, and the suction / dust generator motor 48 suctions / dusts the dust. In this configuration, the blades of the machine 15 are driven.

An arithmetic control unit (not shown) of the hulling unit controller 25 includes a hulling roll rotation speed sensor (not shown) for detecting the rotation speed of the main hulling roller 9a, and a hulling motor. A load current sensor (not shown) for detecting the load current value of the
They are connected via an input interface (not shown), and from an arithmetic control unit (not shown) via an output interface (not shown) and an inverter 32.
A hulling motor 47 and a suction / discharger motor 48 are connected.

Next, the control of the rotation speed of the rice hulling unit and the control of the rotation speed of the suction duster will be described. When the hulling operation is started, a rotation command signal of a predetermined number of rotations is output from the arithmetic control unit (not shown) to the hulling motor 47, and the main / sub hulling rolls 9a and 9b are Rotate at a predetermined number of revolutions
The paddy is supplied with a predetermined amount of paddy and is subjected to a hulling operation. At the time of hulling work, the number of rotations of the main hulling roll 9a is detected by a hulling roll rotation speed sensor (not shown), and the detected rotation speed is compared with a reference rotation speed. If the rotation speed is within the range, the calculation control unit (not shown) does not output a change command signal to increase or decrease the rotation speed. However, if the detected rotation speed is higher (or lower) than the reference rotation speed,
A command signal for decreasing (or increasing) the predetermined number of revolutions is issued via the inverter 32, and the main and sub hulling rolls, 9a and 9b, despite the load fluctuation accompanying the increase or decrease of the supply of chaff. The rice is hulled efficiently while maintaining a predetermined rotation speed.

During the constant rotation speed control of the hulling roll, the load current value of the hulling motor 47 is detected by a load current sensor (not shown). In some cases, an arithmetic control unit (not shown) sends an
A rotation command signal at the α rotation speed is output to the motor 32, and the suction / discharger motor 48 rotates at the α rotation speed and performs a wind selection with a sorting wind corresponding to a standard amount of polished rice. If the reference load current value is not less than a ampere and not more than b ampere, a command signal of β rotation speed is output from the arithmetic control unit (not shown) to the inverter 32, and the suction duster Motor 48 is β
The rice is rotated at the rotation speed and is selected by the selected air flow according to the increased amount of the smashed rice, and the detected load current value is the reference load current value b.
If it is more than ampere, an arithmetic control unit (not shown)
Sends a command signal of the γ rotation speed to the inverter 32,
It rotates at the γ rotation speed, and the air volume is further increased and adjusted. Therefore, the number of rotations of the suction duster 15 according to the amount of the polished rice in the main and sub hulling rolls 9a and 9b is set, and the wind selection of the polished rice can be optimized.

Next, FIG. 6 will be described. The figure shows a dry preparation system, and an elevator 49,
A plurality of grain dryers 50, 50,..., A flow conveyor 51 for embedding raw rice, a flow conveyor 52 for discharging dried grains,
Elevator 53 for embedding dried grains, embedding tank 5
4, a rice huller 55, an oscillating sorter 3 for sorting mixed rice after the hulling wind selection, a grain sorter 56, a brown rice fry elevator 57, and a brown rice storage tank 58.

Each of these devices is an elevator driving motor 59, which is a dedicated driving motor, and which is used for embedding raw rice.
Elevator drive motor 60 for grain dryer, exhaust air motor 61, dust exhaust motor 62, flow conveyor drive motor 63 for fresh rice padding, and for discharging dried grains Flow conveyor drive motor 64, elevator drive motor 65 for incorporation of dried grains, huller drive motor 66, driving of rocking sorter for sorting mixed rice after hulling air selection A motor 67, a grain sorter driving motor 68, and an elevator driving motor 69 for brown rice frying are individually driven.

Then, detection information from the sensor group of each device is input to an arithmetic control unit (not shown) in the central control device 70, and an arithmetic control unit (not shown) in the central control device 70. ), A command signal corresponding to detection information from a sensor group (not shown) of each device is output to these drive motor groups via an inverter (not shown), and each drive motor group. Is controlled.

Next, the control contents of the arithmetic and control unit (not shown) of the centralized control device 70 will be described. Each of these drive motor groups is provided with a load current sensor (not shown) for detecting a load current value. The detected load current value is compared with a reference load current value, and the detected load current value is determined by a predetermined ratio. Alternatively, if the predetermined amount is exceeded, a rotation speed reduction command signal is output to an inverter (not shown), and the rotation speed is adjusted to a reduction side so that the detected load current value falls within the reference load current value. When the load current value exceeds a predetermined ratio or a predetermined amount or more, an overload stop control is performed in which the driving of the drive motor is stopped, and proper rotation of each device is achieved while preventing damage. A dry preparation operation is performed. With such a configuration, the motors of the special type of the elevator group or the flow conveyors 51 and 52 are eliminated, and the motors can be unified to the normal motors, and the inventory management of the driving motors is simplified. In addition, grain clogging prevention and load control of each device can be centrally managed.

Next, the operation of the embodiment shown in FIGS. 1 to 3 will be described. When performing the hulling work, when the hulling is supplied to the hulling unit 1, the hulling rolls 9 and 9 hulle the rice, and then the smashed rice is selected by the lower smashed rice wind selection unit 2 wind. And then
While the mixed rice is separated and sorted by the rocking sorter 3, the hulling is sorted. During such a hulling sorting operation, the hulling sorting operation is performed while being automatically controlled by the various controllers 25, 26, and 27 groups. That is, in the hulling unit 1, the initial gap adjustment setting of the hulling roll, the predetermined opening adjustment setting of the hulling supply control valve (not shown), and the supply amount adjustment and removal based on the supply amount setting of the supply amount setting switch 29. The hulling roll gap control is performed based on the rate or the load current value. In addition, in the crushed rice wind selection unit 2, the rotation speed of the suction duster 15 and the rotation speed of the pressurized air blower (not shown) are adjusted. When the mixing rice sorting section is of the swing sorting device type, the rotation speed of the swing motor 37 is adjusted, the tilt angle of the swing sorting plate 17 is adjusted, and a brown rice switching valve (not shown).
Switching adjustment control is performed, and when the rotary selection cylinder type is used, rotation speed optimization control of the rotary selection cylinder is performed, and when the rotation selection cylinder type is used, the upper net, the middle net, and the lower net ( The hulling sorting operation is performed while the inclination angle optimization control (not shown) is performed.

Prior to such a hulling sorting operation, when a main switch (not shown) is turned on at the start of the operation, the load based on the rotation of the hulling unit driving motor 31 at the set frequency m is set. The current value and the load current value at the change frequency n are detected, and the size of the difference between the detected load current values is used to determine the type of the hulling unit driving motor 31 for the hulling sorter. The main controller 2 automatically determines the type of the sorter.
4, the control reference values of the rice hulling unit controller 25, the rice-slipped rice wind selection unit controller 26, and the mixed rice selection unit controller 27 are changed to those corresponding to the determination type, and are adjusted to the type. Automatic control is performed smoothly.

[0029]

As described above, according to the present invention, at the start of the hulling operation, the type of the hulling sorter is automatically determined,
The control reference value of the controller group is automatically corrected to a value corresponding to the judgment type, so that automatic control can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is an overall cut side view.

FIG. 2 is a block diagram.

FIG. 3 is a flowchart.

FIG. 4 is a cut-away plan view.

FIG. 5 is a flowchart.

FIG. 6 is a side view.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 hulling unit 2 sliding rice wind selection unit 3 rocking sorter 4 frying and conveying unit 5 mixed rice frying machine 6 hulling rice mill 7 brown rice frying machine 8 hulling hopper 9 hulling roll 10 hulling room DESCRIPTION OF REFERENCE NUMERALS 11 Sliding rice style selection box 12 Sliding rice style selection path 13 Pity trough 14 Sliding rice trough 15 Suction duster 16 Dust cylinder 17 Swing sorting plate 20 Distribution supply gutter 21 Distribution case 22 Brown rice partition plate 23 Rice partitioning plate 24 Main controller 25 Rice hulling unit controller 26 Scrambled rice air selection unit controller 27 Mixed rice selection unit controller 28 De-wetting rate setting switch 29 Supply amount setting switch 30 Operation switch 31 Rice Slider drive motor 32 Inverter 33 Roll gap adjustment motor 34 Paddy supply amount adjustment motor 35 Suction / duster adjustment motor 36 Pressurized wind rotation speed adjustment motor 37 Swinging motor Motor 38 Brown rice switching valve switching motor 39 Rotating rotation speed adjusting motor 0 Brown rice partition plate adjusting motor - motor 41 cylinder rotating speed adjusting motor - motor 42 cylinder drive motor - motor 43 on network angle adjusting motor - motor 44 in-lower network angle adjusting motor - motor

Continuation of the front page (56) References JP-A-6-134327 (JP, A) JP-A-3-284359 (JP, A) JP-A-63-274461 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) B02B 1/00-7/02 109

Claims (1)

(57) [Claims] A controller for controlling a part of a hulling sorter, a hulling unit controller 25, a crushed rice wind selection unit controller 26, and a mixed rice sorting unit controller 27, is connected to a main controller 24. Connected to each other, and a controller group 25, 2 of these parts.
Nos. 6 and 27 are configured to automatically adjust the adjusting portions of the respective portions based on the detection data of the sensor group, and to change the load current value of the hulling unit driving motor 31 at no load at the set frequency. Type determining means for determining the type from the load current value of the hulling unit driving motor 31 at no frequency at the frequency, and the controller group 24 in relation to the type determination of the type determining means.
A control device for a hulling sorter comprising reference value correcting means for correcting the control reference values of 25, 26, and 27 to the determined type.